ABAP Keyword Documentation → ABAP - Reference → Processing Internal Data → Character String and Byte String Processing → Expressions and Functions for String Processing → String Functions → Common Parameters of Character String Functions
val - Input Value
... ( ... val = text ... ) ...
text passes the main argument to be processed by the function.
text is a
position. If a character-like data object with a fixed length is specifed, any trailing blanks are ignored.