grub-dev: Comments
2.6 Comments
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All comments shall be C-style comments, of the form '/* ... */'.
Comments shall be placed only on a line by themselves. They shall
not be placed together with code, variable declarations, or other
non-comment entities. A comment should be placed immediately preceding
the entity it describes.
Acceptable:
/* The page # that is the front buffer. */
int displayed_page;
/* The page # that is the back buffer. */
int render_page;
Unacceptable:
int displayed_page; /* The page # that is the front buffer. */
int render_page; /* The page # that is the back buffer. */