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1. A jumper or a temporary connection, especially one that can be changed easily, as a connection on a ‘‘patch panel.’’ 2. A section of coding (or a subroutine) used to correct a mistake or alter a routine. 3. More-or-less uniform distribution of geophones over an area (template), that gives single-fold subsurface coverage for a single source over an area of one-half the dimensions. The sources (or patch) then can move in a systematic way to provide multiple coverage. Also called template. 4. A large geophone group feeding a single channel, occasionally several hundred feet across containing several hundred geophones. Used in transposed recording (q.v.) with surface sources in poor record areas. 5. See patch shooting.