Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
function::indent - returns an amount of space to indent
SYNOPSIS
indent:string(delta:long)
ARGUMENTS
delta
the amount of space added/removed for each call
DESCRIPTION
This function returns a string with appropriate indentation. Call it with a small positive or matching
negative delta. Unlike the thread_indent function, the indent does not track individual indent values on
a per thread basis.
SystemTap Tapset Reference March 2016 FUNCTION::INDENT(3stap)