workings

belly entrails innards

bowels center components contents guts heart middle recesses soul viscera womb

inner parts internal organs

border cowardice exterior exteriority fear margin outside periphery

logistics mechanism nitty-gritty procedures

nuts and bolts

instrument structure system tool

apparatus appliance components contrivance doohickey gadget gears gimmick innards machinery motor works

black box

agency operation procedure process system technique

execution functioning medium performance

failure

rule of thumb

M.O. MO approach manner manner of working means method method of functioning method of operating method of operation mode of operation modus vivendi procedure process system technique way way of doing things

bare bones basic details basics brass tacks essentials fundamentals innards inner workings mechanics nitty-gritty no frills practical details practicalities