Function specify_thin_space 

pub fn specify_thin_space(width: usize) -> ControlSequence

TSS - Thin space specification

TSS is used to establish the width of a thin space for subsequent text. The established width remains in effect until the next occurrence of TSS in the data stream, see annex C.

width specifies the width of the thin space.

The unit in which the parameter value is expressed is that established by the parameter value of SELECT SIZE UNIT (SSU).