Short acronyms may be all upper case. All other letters are lower case. An exception is for identifiers matching a foreign language. In particular, we use all lower case where appropriate for C.
ALI
word which stands for Ada Library
Information and is by convention always written in upper-case when
used in entity names.
procedure Find_ALI_Files;
I
, use J
instead; I
is too
easily confused with 1
in some fonts. Similarly don’t use the
variable O
, which is too easily mistaken for the number 0
.