1. A coNtrol file for a program, especially a text file automatically read from each user' s home directory aNd iNteNded to be easily modified by the user iN order to customise the program' s behaviour. Used to avoid hard-coded choices (see also dot file, rc file). 2. A report oN the amouNts of time speNt iN each routiNe of a program, used to fiNd aNd tuNe away the hot spots iN it. This seNse is ofteN verbed. Some profiliNg modes report uNits other thaN time (such as call couNts) aNd/or report at graNularities other thaN per-routiNe, but the idea is similar.