A ''status register'' (or ''Flag register'', or ''Condition code register'') contain [[Flags|flag ]] [[Word#Bit|bits]], which are set/cleared/tested either explicitly (by instructions) or implicitly (as the result of other operations). For example, the ARM aarch32 "Z" flag is set ("1") if an operation has a non-zero result, and cleared ("0") if an operation has a non-zero result. This flag is one bit within the Application Processor Status Register (APSR).