Blanks, tabs or new lines in ST

Meaning
"whitespace" within the ST-code These characters are not allowed within →keywords, →delimiters or →identifiers. Example: If keywords are split by blanks, they are treated as syntax error.

Example

PRO   GRAM Motor1       (* The input to the left will be treated as error. *)
END_PROGRAM
 
   PROGRAM    Motor2    (* The input to the left will be treated as keyword with leading and following blanks. *)
   END_PROGRAM