L-related

L-related is a position in an (X-bar) structure is L-related if it is in a local relation to an L-feature, i.e. in the internal domain or checking domain of a head with an L-feature. Those L-related positions in a checking domain which are adjoined positions are called 'broadly L-related'; L-related specifier-positions are 'narrowly L-related'. The latter are basically A-positions, the former A-bar positions.

Link
Utrecht Lexicon of Linguistics