Script variables - Revision history

Raffriff42: /* Declaring a New Variable */ move up-page etc

2017-11-12T17:36:33Z

Declaring a New Variable: move up-page etc

← Older revision		Revision as of 19:36, 12 November 2017
Line 56:		Line 56:

	There is another type which is used internally by Avisynth - the {{Term\|void}} or 'undefined' type. Its principal use is in conjunction with optional function arguments. See the [[Internal_functions/Boolean functions\|Defined()]] function.		There is another type which is used internally by Avisynth - the {{Term\|void}} or 'undefined' type. Its principal use is in conjunction with optional function arguments. See the [[Internal_functions/Boolean functions\|Defined()]] function.

			===== Declaring a New Variable =====
			To declare a variable, simply type the variable name, followed by '<tt>=</tt>' (an equals sign), followed by its initial value. The type must not be declared; it is inferred by the value assigned to it (and can actually be changed by subsequent assignments). The only place where it is allowed to declare a variable's type (though not strictly required) is in [[User_defined_script_functions\|user defined script function's]] argument lists. Examples:
			<div {{BoxWidthIndent\|59\|1}} >
			b = false ## declare a variable 'b' of type 'bool' and initialize it to 'false'
			x = $100 ## type int (initial value is in hexadecimal)
			y = 256 ## type int (initial value is in decimal)
			global f = 0.0 ## type float declared globally (see ''Global Variables'' below)

			## declaring function arguments (last one is optional):
			function MyFilter(clip c, int new_color, float amount, val "userdata") { ... }
			</div>

	{{HiddenAnchor\|global_variables}}		{{HiddenAnchor\|global_variables}}
Line 61:		Line 73:
	Variables can be either {{Term\|local}} (bound to the local scope of the executing script block) or {{Term\|global}}. Global variables are bound to the global script environment's scope and can be accessed by all [[Internal functions]], [[User defined script functions]], [[runtime environment]] scripts and the main script also.		Variables can be either {{Term\|local}} (bound to the local scope of the executing script block) or {{Term\|global}}. Global variables are bound to the global script environment's scope and can be accessed by all [[Internal functions]], [[User defined script functions]], [[runtime environment]] scripts and the main script also.

	To ~~define~~ and/or assign a value to a global variable you must precede its name with the keyword <tt>global</tt> at the left side of the assignment. The keyword is not needed (~~actually it is not~~ allowed) in order to read the value of a global variable. Examples:		To declare and/or assign a value to a global variable you must precede its name with the keyword <tt>global</tt> at the left side of the assignment. The keyword is not needed (or allowed) in order to ''read'' the value of a global variable. Examples:
	<div {{BoxWidthIndent\|59\|3}} >		<div {{BoxWidthIndent\|59\|1}} >
	## declaring global variables		## declaring global variables
	global canvas = [[BlankClip]](length=200, pixel_type="yv12")		global canvas = [[BlankClip]](length=200, pixel_type="yv12")
Line 70:		Line 82:
	</div>		</div>

	<div {{BoxWidthIndent\|59\|3}} >		<div {{BoxWidthIndent\|59\|1}} >
	## using a global variable inside a user function		## using a global variable inside a user function
	function MyFunction(clip c)		function MyFunction(clip c)
Line 90:		Line 102:
	return MyFunction		return MyFunction
	## works as expected		## works as expected
	~~</div>~~

	~~===== Declaring a New Variable =====~~
	To declare a variable, simply type the variable name, followed by '=' (an equals sign), followed by its initial value. The type must not be declared; it is inferred by the value assigned to it (and can actually be changed by subsequent assignments). The only place where it is allowed (though not strictly required) to declare a variable's type is in [[User_defined_script_functions\|user defined script function's]] argument lists. Examples:
	~~<div {{BoxWidthIndent\|59\|3}} >~~
	~~b = false # declare a variable 'b' of type 'bool' and initialize it to 'false'~~
	~~x = $100 # type int (initial value is in hexadecimal)~~
	~~y = 256 # type int (initial value is in decimal)~~
	~~global f = 0.0 # type float declared globally~~
	~~...~~
	~~function my_recolor_filter(clip c, int new_color, float amount, val "userdata") { ... }~~
	</div>		</div>
	</div>		</div>

Raffriff42: tweak

2017-11-11T04:41:52Z

tweak

← Older revision		Revision as of 06:41, 11 November 2017
Line 74:		Line 74:
	function MyFunction(clip c)		function MyFunction(clip c)
	{		{
	C		C
	(testbool ) ? [[FlipHorizontal]] : [[FlipVertical]]		(testbool ) ? [[FlipHorizontal]] : [[FlipVertical]]
	return Last		return Last

Raffriff42: tweak

2017-11-11T04:37:22Z

tweak

← Older revision		Revision as of 06:37, 11 November 2017
Line 72:		Line 72:
	<div {{BoxWidthIndent\|59\|3}} >		<div {{BoxWidthIndent\|59\|3}} >
	## using a global variable inside a user function		## using a global variable inside a user function
			function MyFunction(clip c)
			{
			C
			(testbool ) ? [[FlipHorizontal]] : [[FlipVertical]]
			return Last
			}

	[[ColorBars]]		[[ColorBars]]
	[[Subtitle]]("ABCDEFG", size=Height/8, align=5)		[[Subtitle]]("ABCDEFG", size=Height/8, align=5)
Line 77:		Line 84:
	testbool = true ## wrong - not global		testbool = true ## wrong - not global
	return MyFunction		return MyFunction
	## ~~...~~"Error: I don't know what 'testbool' means"		## "Error: I don't know what 'testbool' means"

	...		...
	'''''global''''' testbool = true ## right		'''''global''''' testbool = true ## right
	return MyFunction		return MyFunction
	## ~~...~~works as expected		## works as expected

	~~function MyFunction(clip c)~~
	{
	C
	~~(testbool ) ? [[FlipHorizontal]] : [[FlipVertical]]~~
	~~return Last~~
	}
	</div>		</div>

Raffriff42: typo

2017-11-11T03:14:55Z

typo

← Older revision		Revision as of 05:14, 11 November 2017
Line 74:		Line 74:
	[[ColorBars]]		[[ColorBars]]
	[[Subtitle]]("ABCDEFG", size=Height/8, align=5)		[[Subtitle]]("ABCDEFG", size=Height/8, align=5)

	testbool = true ## wrong - not global		testbool = true ## wrong - not global
	return MyFunction		return MyFunction
			## ..."Error: I don't know what 'testbool' means"

			...
			'''''global''''' testbool = true ## right
			return MyFunction
			## ...works as expected

	function MyFunction(clip c)		function MyFunction(clip c)
Line 83:		Line 90:
	return Last		return Last
	}		}
	~~## ..."Error: I don't know what 'testbool' means"~~

	~~...~~
	~~'''''global''''' testbool = true ## right~~
	~~return MyFunction~~
	~~## ...works as expected~~
	</div>		</div>

Raffriff42: add link to Colors; add "global" example

2017-11-11T03:03:16Z

add link to Colors; add "global" example

← Older revision		Revision as of 05:03, 11 November 2017
Line 44:		Line 44:

	*{{Term\|int}}		*{{Term\|int}}
	: An integer (32 bits, signed). An integer literal is entered as a sequence of digits, optionally with a + or - at the beginning. The value can be given in ''hexadecimal'' by preceding it with a "$" character. For example <tt>$FF</tt> as well as <tt>$ff</tt> (case does not matter) are equal to 255. See also: [[Internal_functions/Numeric_functions\|Numeric Functions]].		: An integer (32 bits, signed). An integer literal is entered as a sequence of digits, optionally with a <tt>+</tt> or <tt>-</tt> at the beginning. The value can be given in ''hexadecimal'' (often used for [[Colors\|color values]]) by preceding it with a <tt>'''$'''</tt> character. For example <tt>$FF</tt> as well as <tt>$ff</tt> (case does not matter) are equal to 255. See also: [[Internal_functions/Numeric_functions\|Numeric Functions]].

	*{{Term\|float}}		*{{Term\|float}}
Line 63:		Line 63:
	To define and/or assign a value to a global variable you must precede its name with the keyword <tt>global</tt> at the left side of the assignment. The keyword is not needed (actually it is not allowed) in order to read the value of a global variable. Examples:		To define and/or assign a value to a global variable you must precede its name with the keyword <tt>global</tt> at the left side of the assignment. The keyword is not needed (actually it is not allowed) in order to read the value of a global variable. Examples:
	<div {{BoxWidthIndent\|59\|3}} >		<div {{BoxWidthIndent\|59\|3}} >
			## declaring global variables
	global canvas = [[BlankClip]](length=200, pixel_type="yv12")		global canvas = [[BlankClip]](length=200, pixel_type="yv12")
	global stroke_intensity = 0.7		global stroke_intensity = 0.7
	...		...
	global canvas = [[Overlay]](canvas, pen, opacity=stroke_intensity, mask=brush)		global canvas = [[Overlay]](canvas, pen, opacity=stroke_intensity, mask=brush)
			</div>

			<div {{BoxWidthIndent\|59\|3}} >
			## using a global variable inside a user function
			[[ColorBars]]
			[[Subtitle]]("ABCDEFG", size=Height/8, align=5)
			testbool = true ## wrong - not global
			return MyFunction

			function MyFunction(clip c)
			{
			C
			(testbool ) ? [[FlipHorizontal]] : [[FlipVertical]]
			return Last
			}
			## ..."Error: I don't know what 'testbool' means"

			...
			'''''global''''' testbool = true ## right
			return MyFunction
			## ...works as expected
	</div>		</div>

Raffriff42: formatting, links, phrasing

2017-11-10T12:48:54Z

formatting, links, phrasing

← Older revision		Revision as of 14:48, 10 November 2017
Line 1:		Line 1:
	<div style="max-width:62em" >		<div style="max-width:62em" >
	''"String" redirects here. For the String() conversion function, see [[Internal_functions#String\|Internal functions: String]]''		''"String" redirects here. For the ''String()'' conversion function, see [[Internal_functions#String\|Internal functions: String]]''

	''"Val" redirects here. For the Value() conversion function, see [[Internal_functions#Value\|Internal functions: Value]]''		''"Val" redirects here. For the ''Value()'' conversion function, see [[Internal_functions#Value\|Internal functions: Value]]''

			__TOC__
			In computer programming, a '''variable''' is a storage location, which contains some information referred to as a ''value'', paired with an associated symbolic ''name''.<sup>[[#References\|(1)]]</sup>  This page shows how to use variables in a script. It also describes the types of data that scripts can manipulate, and how ''literals'' (constants) of those types are written.

	This page shows how to use ''variables'' to store intermediate values for further processing in a script. It also describes the types of data that scripts can manipulate, and how ''literals'' (constants) of those types are written.		===== Variable Names =====

	A ''variable name'' ~~can~~ be ~~a character string~~ of ~~practically any length (more than 4000 characters in Avisynth 2.56 and later) that contains~~ (English) letters, digits, and underscores (_), but no other characters. The name cannot start with a digit.		A ''variable name'' may be made of (English) letters, digits, and underscores (_), but no other characters. The name cannot start with a digit. The name can be of practically any length – more than 4000 characters. Variable names are not case-sensitive.

	You may use characters from your language system ~~codepage (locale) in strings and file names~~ (ANSI 8 bit only, not Unicode).		You may use characters from your language system [[wikipedia:Code_page\|code page]] (ANSI 8 bit only, not Unicode) in ''string literals'' (see below) and file names, but variable names are restricted to the [[wikipedia:ASCII#Printable_characters\|ASCII characters]] <tt>A</tt>-<tt>Z</tt>, <tt>a</tt>-<tt>z</tt>, <tt>0</tt>-<tt>9</tt> and <tt>_</tt> (underscore).

	A variable's placement in an ''expression'' is determined by the [[AviSynth Syntax]].		A variable's placement in an ''expression'' is determined by the [[AviSynth Syntax]].

			===== Variable Types =====
	Variables can have a value of one of the following ''types'':		Variables can have a value of one of the following ''types'':

	*{{Term\|clip}}		*{{Term\|clip}}
	: A ~~video~~ clip ~~containing~~ video and / or audio~~. A script~~ must return a value of ~~this~~ type. Clips have ~~various~~ [[Clip_properties\|properties]] ~~that can be accessed~~.		: A ''clip'' holds the video and/or audio content; all [[Frameserver\|frameserving]] scripts (there are other types, such as [[Import\|function library scripts]]) must return a value of type ''clip''. Clips also have [[Clip_properties\|properties]], such as ''Width'', ''Height'' and ''FrameRate''.

	*{{Term\|string}}		*{{Term\|string}}
	: A sequence of characters representing text. String literals are written as text surrounded either by <tt>"</tt>quotation marks<tt>"</tt> or by <tt>"""</tt>triple quotes<tt>"""</tt>. The text can contain any characters (including line breaks) except the terminating quotation mark or triple-quote sequence.		: A sequence of characters representing text. String literals are written as text surrounded either by <tt>"</tt>quotation marks<tt>"</tt> or by <tt>"""</tt>triple quotes<tt>"""</tt>. The text can contain any characters (including line breaks) except the terminating quotation mark or triple-quote sequence.
	<div {{BoxWidthIndent\|42\|3}} >		<div {{BoxWidthIndent\|42\|3}} >
	[[ColorBars]]		[[ColorBars]]
Line 55:		Line 58:

	{{HiddenAnchor\|global_variables}}		{{HiddenAnchor\|global_variables}}
			===== Global Variables =====
	Variables can be either {{Term\|local}} (bound to the local scope of the executing script block) or {{Term\|global}}. Global variables are bound to the global script environment's scope and can be accessed by all [[Internal functions]], [[User defined script functions]], [[runtime environment]] scripts and the main script also.		Variables can be either {{Term\|local}} (bound to the local scope of the executing script block) or {{Term\|global}}. Global variables are bound to the global script environment's scope and can be accessed by all [[Internal functions]], [[User defined script functions]], [[runtime environment]] scripts and the main script also.

	To define and/or assign a value to a global variable you must precede its name with the keyword <tt>global</tt> at the left side of the assignment. The keyword is not needed (actually it is not allowed) in order to read the value of a global variable. Examples:		To define and/or assign a value to a global variable you must precede its name with the keyword <tt>global</tt> at the left side of the assignment. The keyword is not needed (actually it is not allowed) in order to read the value of a global variable. Examples:
			<div {{BoxWidthIndent\|59\|3}} >
	global canvas = [[BlankClip]](length=200, pixel_type="yv12")		global canvas = [[BlankClip]](length=200, pixel_type="yv12")
	global stroke_intensity = 0.7		global stroke_intensity = 0.7
	...		...
	global canvas = [[Overlay]](canvas, pen, opacity=stroke_intensity, mask=brush)		global canvas = [[Overlay]](canvas, pen, opacity=stroke_intensity, mask=brush)
			</div>

			===== Declaring a New Variable =====
	To declare a variable, simply type the variable name, followed by '=' (an equals sign), followed by its initial value. The type must not be declared; it is inferred by the value assigned to it (and can actually be changed by subsequent assignments). The only place where it is allowed (though not strictly required) to declare a variable's type is in [[User_defined_script_functions\|user defined script function's]] argument lists. Examples:		To declare a variable, simply type the variable name, followed by '=' (an equals sign), followed by its initial value. The type must not be declared; it is inferred by the value assigned to it (and can actually be changed by subsequent assignments). The only place where it is allowed (though not strictly required) to declare a variable's type is in [[User_defined_script_functions\|user defined script function's]] argument lists. Examples:
			<div {{BoxWidthIndent\|59\|3}} >
	b = false # declare a variable 'b' of type 'bool' and initialize it to 'false'		b = false # declare a variable 'b' of type 'bool' and initialize it to 'false'
	x = $100 # type int (initial value is in hexadecimal)		x = $100 # type int (initial value is in hexadecimal)
Line 73:		Line 79:
	function my_recolor_filter(clip c, int new_color, float amount, val "userdata") { ... }		function my_recolor_filter(clip c, int new_color, float amount, val "userdata") { ... }
	</div>		</div>
			</div>

			===== References =====
			1. [https://en.wikipedia.org/wiki/Variable_(computer_science) Variable (computer science)] (wikipedia)

	----		----
	Back to [[AviSynth Syntax]].		'''←''' Back to [[AviSynth Syntax]].

	[[Category:AviSynth_Syntax]]		[[Category:AviSynth_Syntax]]
	[[Category:Scripting_Basics]]		[[Category:Scripting_Basics]]

Raffriff42: add internal link anchor /global_variables/

2017-11-08T11:37:57Z

add internal link anchor /global_variables/

← Older revision		Revision as of 13:37, 8 November 2017
Line 54:		Line 54:
	There is another type which is used internally by Avisynth - the {{Term\|void}} or 'undefined' type. Its principal use is in conjunction with optional function arguments. See the [[Internal_functions/Boolean functions\|Defined()]] function.		There is another type which is used internally by Avisynth - the {{Term\|void}} or 'undefined' type. Its principal use is in conjunction with optional function arguments. See the [[Internal_functions/Boolean functions\|Defined()]] function.

			{{HiddenAnchor\|global_variables}}
	Variables can be either {{Term\|local}} (bound to the local scope of the executing script block) or {{Term\|global}}. Global variables are bound to the global script environment's scope and can be accessed by all [[Internal functions]], [[User defined script functions]], [[runtime environment]] scripts and the main script also.		Variables can be either {{Term\|local}} (bound to the local scope of the executing script block) or {{Term\|global}}. Global variables are bound to the global script environment's scope and can be accessed by all [[Internal functions]], [[User defined script functions]], [[runtime environment]] scripts and the main script also.

Raffriff42: new string examples

2016-03-13T23:22:11Z

new string examples

← Older revision		Revision as of 01:22, 14 March 2016
Line 19:		Line 19:

	*{{Term\|string}}		*{{Term\|string}}
	: A sequence of characters representing text. String literals are written as text surrounded either by <tt>"</tt>quotation marks<tt>"</tt> or by <tt>"""</tt>triple quotes<tt>"""</tt>. The text can contain any characters except the terminating quotation mark or triple-quote sequence.		: A sequence of characters representing text. String literals are written as text surrounded either by <tt>"</tt>quotation marks<tt>"</tt> or by <tt>"""</tt>triple quotes<tt>"""</tt>. The text can contain any characters (including line breaks) except the terminating quotation mark or triple-quote sequence.
	~~:* To put a quotation mark inside a string, you need to use the triple-quote form. For example:~~
	<div {{BoxWidthIndent\|42\|3}} >		<div {{BoxWidthIndent\|42\|3}} >
	Subtitle(~~"""AviSynth is as they say~~, ~~"L33T" ""~~")		[[ColorBars]]
			[[ScriptClip]]("
			#comment
			[[Subtitle]]([[Internal_functions#String\|String]]([[Runtime_environment#Special_runtime_variables_and_functions\|current_frame]]),
			\ align=5)
			")
	</div>		</div>
	~~:* Alternatively, you can use <tt>“</tt>curly-quotes<tt>”</tt> inside the string instead of straight quotes to get around this limitation.~~
	~~:* Embedded quotes may also be included with <tt>[[Internal functions#Chr\|Chr]](34)</tt>; see the next example.~~
	~~:* Triple-quoted strings also support embedded line breaks. For example:~~
	<div {{BoxWidthIndent\|42\|3}} >		<div {{BoxWidthIndent\|42\|3}} >
	[[~~Internal functions#Eval\|Eval~~]]("""		[[ColorBars]]
			[[ScriptClip]]("""
	#comment		#comment
	[[~~ColorBars~~]]		[[Subtitle]]("Current frame = " + [[Internal_functions#String\|String]]([[Runtime_environment#Special_runtime_variables_and_functions\|current_frame]]),
	Q=[[~~Internal functions~~#~~Chr~~\|~~Chr~~]](~~34)~~		\ align=5)
	[[~~Subtitle~~]]~~("AviSynth is as they say~~, ~~"+Q+"L33T"+Q~~
	\ , align=5)
	""")		""")
	</div>		</div>
			:* To put a quotation mark inside a string, you need to use the triple-quote form as shown above.
			:* Alternatively, you can use <tt>“</tt>curly-quotes<tt>”</tt> to get around this limitation.
			:* Embedded quotes may also be included with <tt>[[Internal functions#Chr\|Chr]](34)</tt>.

	*{{Term\|int}}		*{{Term\|int}}

Raffriff42: string: tweak example code

2016-03-13T12:55:54Z

string: tweak example code

← Older revision		Revision as of 14:55, 13 March 2016
Line 25:		Line 25:
	</div>		</div>
	:* Alternatively, you can use <tt>“</tt>curly-quotes<tt>”</tt> inside the string instead of straight quotes to get around this limitation.		:* Alternatively, you can use <tt>“</tt>curly-quotes<tt>”</tt> inside the string instead of straight quotes to get around this limitation.
	:* Embedded quotes may also be included with <tt>[[Internal functions#Chr\|Chr]](34)</tt> .		:* Embedded quotes may also be included with <tt>[[Internal functions#Chr\|Chr]](34)</tt>; see the next example.
	:* Triple-quoted strings also support embedded line breaks~~, which comes in very handy for [[ScriptClip]] and [[Internal functions#Eval\|Eval]]~~. For example:		:* Triple-quoted strings also support embedded line breaks. For example:
	<div {{BoxWidthIndent\|42\|3}} >		<div {{BoxWidthIndent\|42\|3}} >
	[[Internal functions#Eval\|Eval]]("""		[[Internal functions#Eval\|Eval]]("""
	#comment		#comment
	[[ColorBars]]		[[ColorBars]]
	[[Subtitle]]("AviSynth is as they say, "+~~[[Internal functions#Chr\|Chr]](34)~~+"L33T"+~~Chr(34)~~		Q=[[Internal functions#Chr\|Chr]](34)
			[[Subtitle]]("AviSynth is as they say, "+Q+"L33T"+Q
	\ , align=5)		\ , align=5)
	""")		""")

Raffriff42: string: add multi-line example, remove "The manual used to mention TeX-style quotes...''

2016-03-13T12:11:22Z

string: add multi-line example, remove "The manual used to mention TeX-style quotes...''

← Older revision		Revision as of 14:11, 13 March 2016
Line 19:		Line 19:

	*{{Term\|string}}		*{{Term\|string}}
	: A sequence of characters representing text. String literals are written as text surrounded either by "quotation marks" or by """~~three~~ quotes""". The text can contain any characters except the terminating quotation mark or triple-quote sequence.		: A sequence of characters representing text. String literals are written as text surrounded either by <tt>"</tt>quotation marks<tt>"</tt> or by <tt>"""</tt>triple quotes<tt>"""</tt>. The text can contain any characters except the terminating quotation mark or triple-quote sequence.
	: ~~The manual used to mention ''TeX-style quotes'', but it has been confirmed that AviSynth doesn't work this way since v1.03. If you need to~~ put a quotation mark inside a string, you need to use ~~[http~~://~~forum~~.~~doom9.org~~/~~showthread~~.~~php?s=&threadid=71597 Python~~-~~style~~] ~~"""three quotes"""~~. For example:		:* To put a quotation mark inside a string, you need to use the triple-quote form. For example:
	<div {{BoxWidthIndent\|42\|2}} >		<div {{BoxWidthIndent\|42\|3}} >
	~~Subtitle~~("""~~AVISynth~~ is as they say "~~l33t~~".""")		Subtitle("""AviSynth is as they say, "L33T" """)
			</div>
			:* Alternatively, you can use <tt>“</tt>curly-quotes<tt>”</tt> inside the string instead of straight quotes to get around this limitation.
			:* Embedded quotes may also be included with <tt>[[Internal functions#Chr\|Chr]](34)</tt> .
			:* Triple-quoted strings also support embedded line breaks, which comes in very handy for [[ScriptClip]] and [[Internal functions#Eval\|Eval]]. For example:
			<div {{BoxWidthIndent\|42\|3}} >
			[[Internal functions#Eval\|Eval]]("""
			#comment
			[[ColorBars]]
			[[Subtitle]]("AviSynth is as they say, "+[[Internal functions#Chr\|Chr]](34)+"L33T"+Chr(34)
			\ , align=5)
			""")
	</div>		</div>
	: Alternatively, you can use Windows extended-ASCII curly-quotes inside the string instead of straight quotes to get around this limitation. See also: [[Internal_functions/String_functions\|String Functions]].

	*{{Term\|int}}		*{{Term\|int}}

← Older revision		Revision as of 13:37, 8 November 2017
Line 54:		Line 54:
	There is another type which is used internally by Avisynth - the {{Term\|void}} or 'undefined' type. Its principal use is in conjunction with optional function arguments. See the [[Internal_functions/Boolean functions\|Defined()]] function.		There is another type which is used internally by Avisynth - the {{Term\|void}} or 'undefined' type. Its principal use is in conjunction with optional function arguments. See the [[Internal_functions/Boolean functions\|Defined()]] function.

			{{HiddenAnchor\|global_variables}}
	Variables can be either {{Term\|local}} (bound to the local scope of the executing script block) or {{Term\|global}}. Global variables are bound to the global script environment's scope and can be accessed by all [[Internal functions]], [[User defined script functions]], [[runtime environment]] scripts and the main script also.		Variables can be either {{Term\|local}} (bound to the local scope of the executing script block) or {{Term\|global}}. Global variables are bound to the global script environment's scope and can be accessed by all [[Internal functions]], [[User defined script functions]], [[runtime environment]] scripts and the main script also.