Words
All X-PLOR statements are composed of words.
- word:==
-
- A one-character word.
- A sequence of nonblank characters
that contains no one-character words and
that is enclosed by spaces or one-character words.
- A quoted string, i.e., a sequence of any characters enclosed in
double quotes (") (a double quote itself can be produced by
""" ).
A one-character word comprises special letters:
- one-character-word:==
- ) ( : @
=
In the case of mathematical
expressions (such as vector statement
and evaluate statement),
one-character words constitute
a larger set of special letters:
- one-character-word:==
- ) ( : @
=
# ^
~ + -
Characters between comment braces { } or after an “!" on the same line
are always ignored. The carriage return is treated as a space. Unless
the word is a quoted string, all letters are converted to
uppercase upon parsing.
Subsections
Xplor-NIH 2024-09-13