Edit C:\Users\Admin\AppData\Roaming\Notepad++\functionList\krl.xml

<?xml version="1.0" encoding="UTF-8" ?>

<NotepadPlus>
	<functionList>

<parser
			displayName="KRL"
			id         ="krl_function"
			commentExpr="(?x)                                               # Utilize inline comments (see `RegEx - Pattern Modifiers`)
							(?m-s:;.*$)                                     # Single Line Comment
						"
		>
			<function
				mainExpr="(?x)                                              # Utilize inline comments (see `RegEx - Pattern Modifiers`)
						(?i:
							(?:GLOBAL\h+)?
							DEF                                             # start-of-procedure indicator, possible extended to...
							(?:
								FCT                                         # ...start-of-function indicator
								\h+
								(?:BOOL|CHAR|INT|REAL|(?&amp;VALID_ID))     # returning a primitive type or a user-defined-type...
								(?:                                         # ...optionally as an array
									\h*\[
									\h*(?:\d+|\x27(?:H[0-9A-Fa-f]+|B[01]+)\x27)?
									\h*\]
								)?
							)?
						)
						\h+
						\K                                                  # keep the text matched so far, out of the overall match
						(?'VALID_ID'                                        # valid identifier, use as subroutine
							\b(?!(?i:
								AN(?:D|IN|OUT)
							|	B(?:OOL|RAKE|_(?:AND|EXOR|NOT|OR))
							|	C(?:ASE|AST_(?:FROM|TO)|HAR|IRC(?:_REL)?|ON(?:ST|TINUE)|_(?:DIS|ORI|PTP|VEL))
							|	D(?:ECL|EF(?:AULT|DAT|FCT)|ELAY|O)
							|	E(?:LSE|ND(?:DAT|FCT|FOR|IF|LOOP|SWITCH|WHILE)?|NUM|X(?:IT|OR|T(?:FCT)?))
							|	F(?:ALSE|OR)
							|	G(?:LOBAL|OTO)
							|	HALT
							|	I(?:[FS]|MPORT|NT(?:ERRUPT)?)
							|	L(?:IN(?:_REL)?|OOP)
							|	M(?:AXI|INI)MUM
							|	NOT
							|	OR
							|	P(?:RIO|TP(?:_REL)?|UBLIC)
							|	RE(?:AL|PEAT|SUME|TURN)
							|	S(?:EC|IGNAL|TRUC|WITCH)
							|	T(?:HEN|O|RIGGER|RUE)
							|	UNTIL
							|	W(?:AIT|HEN|HILE)
							)\b)                                            # keywords, not to be used as identifier
							[$A-Za-z_\x7F-\xFF][$\w\x7F-\xFF]{0,23}         # valid character combination for identifiers
						)
						\h*$[^)]*$
					"
			>
				
				<functionName>
					<nameExpr expr="[$A-Za-z_\x7F-\xFF][$\w\x7F-\xFF]{0,23}" />
				</functionName>
			</function>
		</parser>
	</functionList>
</NotepadPlus>

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