Define section typeThe .code, .data and .port keywords are used to set the type of the current section to either a code, data or port section respectivly. Once the type of a section has been defined it cannot be changed.
e.g. .sect fred .code ; set the type of section fred to code e.g. .sect jack .data ; set the type of section jack to datae.g. .sect bert .port ; set the type of section bert to port