Implement unique IDs and card linking

doc/function/crop.txt

@@ -5,11 +5,13 @@ Function: crop
 
 Shrink an image by cutting off some of the image, starting at the position denoted by the offsets. The resulting image size is specified in the parameters.
 
+Resulting image can be bigger than the original, if offset_x or offset_y are negative, or if width or height are bigger than the original width and height.
+
 --Parameters--
 ! Parameter		Type				Description
 | @input@		[[type:image]]		Image to enlarge
-| @height@		[[type:double]]		Height of the resulting image
-| @width@		[[type:double]]		Width of the resulting image
-| @offset_x@	[[type:double]]		Offset of crop, horizontally
-| @offset_y@	[[type:double]]		Offset of crop, vertically
+| @height@		[[type:double]]		Height of the resulting image, in pixels
+| @width@		[[type:double]]		Width of the resulting image, in pixels
+| @offset_x@	[[type:double]]		Offset of crop, horizontally, in pixels
+| @offset_y@	[[type:double]]		Offset of crop, vertically, in pixels
 

doc/function/dimensions_of.txt

@@ -0,0 +1,11 @@
+Function: dimensions_of
+
+--Usage--
+> dimensions_of(input: image)
+
+Returns an array containing the width and height of the image in pixels.
+
+--Parameters--
+! Parameter	Type				Description
+| @input@	[[type:image]]		Image to whos dimensions we want.
+

doc/function/get_card_from_link.txt

@@ -0,0 +1,13 @@
+Function: get_card_from_link
+
+--Usage--
+> get_card_from_link(card: card, "link type")
+
+Inspects a given [[type:card]]'s links to find one of the given type, and returns the linked card.
+Returns nil if no card was found.
+
+--Parameters--
+! Parameter	Type				Description
+| @input@	[[type:string]]		The type of link we want to find.
+| @card@	[[type:card]]		The card whose links we'll inspect.
+| @set@		[[type:set]]		The set in which to look. This can be omited since 'set' is a predefined variable.

doc/function/get_card_from_uid.txt

@@ -0,0 +1,12 @@
+Function: get_card_from_uid
+
+--Usage--
+> get_card_from_uid(input: "uid")
+
+Returns the [[type:card]] with the given uid inside the set.
+Returns nil if no card was found.
+
+--Parameters--
+! Parameter	Type				Description
+| @input@	[[type:string]]		The uid of the card we want to retrieve.
+| @set@		[[type:set]]		The set in which to look. This can be omited since 'set' is a predefined variable.

doc/function/get_card_styling.txt

@@ -5,12 +5,12 @@ Function: get_card_styling
 
 Get the styling data of a [[type:card]].
 
-This is for use in exporter scripts. In card scripts, use the "styling" predefined variable instead.
+This is for use in exporter scripts. In card scripts, use the 'styling' predefined variable instead.
 
 --Parameters--
 ! Parameter	Type					Description
 | @input@	[[type:card]]		The card you want to retrieve the styling data from.
-| @set@		[[type:set]]		The set the card belongs to. In an exporter script, this can be omited since "set" is a predefined variable.
+| @set@		[[type:set]]		The set the card belongs to. In an exporter script, this can be omited since 'set' is a predefined variable.
 
 --Examples--
 > # Retrieve the value "is foil" from the card's styling options

doc/function/get_mse_locale.txt

@@ -0,0 +1,6 @@
+Function: get_mse_locale
+
+--Usage--
+> get_mse_locale()
+
+Returns the name of the currently selected locale folder.

doc/function/has_link.txt

@@ -0,0 +1,14 @@
+Function: has_link
+
+--Usage--
+> has_link(card: card, "link type")
+
+Inspects a given [[type:card]]'s links to find one of the given type.
+Returns true if such a link was found, false otherwise.
+
+Note that this function does not check if the linked card exists in the set. For that, use get_card_from_link.
+
+--Parameters--
+! Parameter	Type				Description
+| @input@	[[type:string]]		The type of link we want to find.
+| @card@	[[type:card]]		The card whose links we'll inspect.

doc/function/index.txt

@@ -97,6 +97,8 @@ These functions are built into the program, other [[type:function]]s can be defi
 | [[fun:flip_vertical]]		Flip an image vertically.
 | [[fun:rotate_image]]		Rotate an image.
 | [[fun:drop_shadow]]		Add a drop shadow to an image.
+| [[fun:insert_image]]		Insert an image inside another.
+| [[fun:dimensions_of]]		Get the width and height of an image.
 | [[fun:symbol_variation]]	Render a variation of a [[type:symbol]].
 | [[fun:import_image]]	Load an image from outside the data folder.
 | [[fun:built_in_image]]	Return an image built into the program.
@@ -106,6 +108,9 @@ These functions are built into the program, other [[type:function]]s can be defi
 | [[fun:add_card_to_set]]		Add a [[type:card]] to a [[type:set]].
 | [[fun:get_card_styling]]		Get the styling data of a [[type:card]].
 | [[fun:get_card_stylesheet]]	Get the stylesheet of a [[type:card]].
+| [[fun:get_card_from_uid]]		Find the [[type:card]] with the given uid.
+| [[fun:get_card_from_link]]		Find a [[type:card]] that has the given link type to the given [[type:card]].
+| [[fun:has_link]]		Determine if the given the given [[type:card]] has a link of the given type.
 	
 ! HTML export			<<<
 | [[fun:to_html]]		Convert [[type:tagged text]] to html.
@@ -118,6 +123,7 @@ These functions are built into the program, other [[type:function]]s can be defi
 	
 ! Other functions		<<<
 | [[fun:get_mse_version]]			Get the MSE app version.
+| [[fun:get_mse_locale]]			Get the name of the currently selected locale.
 | [[fun:get_mse_path]]			Get the MSE app folder absolute path.
 | [[fun:trace]]			Output a message for debugging purposes.
 | [[fun:assert]]		Check a condition for debugging purposes.

doc/function/insert_image.txt

@@ -0,0 +1,17 @@
+Function: insert_image
+
+--Usage--
+> insert_image(base_image: image, inserted_image: image, offset_x: coordinate, offset_y: coordinate, background_color: color)
+
+Insert an image inside another image.
+
+The inserted image can be put outside the bounds of the base image. The resulting image will be widened accordingly.
+
+--Parameters--
+! Parameter				Type				Description
+| @base_image@			[[type:image]]		Image that serves as the canvas
+| @inserted_image@		[[type:image]]		Image inserted on top of the base image
+| @offset_x@			[[type:double]]		Offset of insertion, horizontally, in pixels
+| @offset_y@			[[type:double]]		Offset of insertion, vertically, in pixels
+| @background_color@	[[type:color]]		Background color, optional, defaults to transparent
+