Trace Code Blocks
 Trace through a codeblock as it is executed
──────────────────────────────────────────────────────────────────────────────

 This option controls whether a Code block is stepped through, an iteration
 at a time, or whether the whole codeblock is treated as one iteration.

 By default, this option is set to on, When a codeblock is encountered, the
 source code window will display a {||...} at the start of the line
 containing the codeblock during each iteration of the codeblock.