* all. So you can call it often.
*
* <note><para>
- * In a virtual machine interpreter, once per opcode is appropriate. In a
- * program with lots of computation, pick a comparable rate.
+ * In a virtual machine interpreter, once per opcode is appropriate. A more
+ * parsimonious approach would be once per branch and function call opcode;
+ * this guarantees it will be called inside loops. In a program with lots of
+ * computation, pick a comparable rate.
* </para></note>
*
* glk_tick() does not try to update the screen, or check for player input, or
* loop, this is critical. In a C program, you can often eyeball it.
* </para>
* <para>But the next version of <filename>model.c</filename> will have a
- * glk_tick() in the ornate printing loop of <function>verb_yada()</function>.
- * Just to make the point.
+ * glk_tick() in the ornate printing loop of
+ * <function>verb_yada()</function>. Just to make the point.
* </para>
* </note>
*/