startpos & endpos explanation

This is the general explanation for the startpos and endpos optional arguments feature where available. Unless otherwise stated, all procedures that offer the startpos and endpos optional arguments will behave similarly to the description.

Description

If the optional arguments startpos and/or endpos are presented, the procedure will start operating on the input value from the startpos position to the endpos position, inclusive of both positions. If the procedure ignore leading and trailing empty spaces it will still ignore the begining spaces starting from the startpos position and the ending spaces starting from the endpos position.

If the startpos position is smaller than 1 then the procedure will start at the first index.

An error is considered to have occurred if the startpos position is larger than the length of the input value. How errors are handled is based on the procedure.

If the endpos position is larger than the length of the input value then the procedure will stop at the last position and inclusive of the last position.

An error is considered to have occurred if the endpos position is smaller than 1. How errors are handled is based on the procedure.

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