In a multitimbral instrument you often have basic sounds which you combine into multitimbral setups (Parents). As described on page 166 the Studio Module calls the individual sounds in a Parent, Children.
If the Patches displayed in the window are of the "Parent" type, a black triangle is displayed in the upper right corner of each cell. Clicking here brings up a pop-up with the names of the "Child Patches" this "Parent Patch" is made up of. There might also be a "c" (the Child Patch is on a memory card) or an "r" (the Child Patch is in a ROM bank).
