Left-aligns an argument by removing leading blanks.
||MAUTOSOURCE system option
%KLEFT (text | text expression)
%QKLEFT (text | text
The %KLEFT and %KQLEFT macro functions left-align arguments
by removing leading blanks. If the argument contains a special character or
mnemonic operator, listed here, use %KQLEFT.
%KLEFT returns an unquoted result, even if the argument is quoted. %KQLEFT
produces a result with the following special characters and mnemonic operators
masked so that the macro processor interprets them as text instead of as elements
of the macro language:
& % ' " ( ) + - * / < > = ¬ ^ ~ ; , # blank
AND OR NOT EQ NE LE LT GE GT IN
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