As you might have surmised from the example file we briefly reviewed, the basic syntax of an rpmrc file entry is:
<name>:<value>
The <name> part of the entry is not case sensitive, so any capitalization is acceptable. The colon separating the name from its value must immediately follow the name. No spaces are allowed here. The formatting requirements on the value side of the entry vary from value to value and will be discussed along with each entry.