<dedent> remove common whitespace from a string

name
dedent
xml namespace
http://moyaproject.com

Removes common whitespace from the start of lines.

Example

<dedent dst="text">
    This text will have the initial whitespace removed
        This will start with only 4 spaces
    Back to column 0
</dedent>
inherited attributes
name purpose type required? default choices
dst Destination reference No
if Conditional expression expression No yes
value Value expression No None