– Update: SNIPPET – length snippet will display without a line staff. To display the length SNIPPET line staff, set the *SNIPPET-LENGTH-LINE* to T.  (defparameter *snippet-length-line* T "Enable or disable the length snippet line staff display.") The default is: NIL – Fixes: Bug fix found in length conversion to length-symbols function. Missing OM Developer documents (English version).   Best wishes, Janusz