Function reduce_separation 

pub fn reduce_separation(n: usize) -> ControlSequence

SRCS - Set reduced character separation

SRCS is used to establish reduced inter-character escapement for subsequent text. The established reduced escapement remains in effect until the next occurrence of SRCS or of SET ADDITIONAL CHARACTER SEPARATION (SACS) in the data stream or until it is reset to the default value by a subsequent occurrence of CARRIAGE RETURN/LINE FEED (CR/LF) or of NEXT LINE (NEL) in the data stream.

n specifies the number of units by which the inter-character escapement is reduced.

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