<>Search for anything<hr/>
<scheme-kw>Slide with scheme
<graph-kw>Slide with graph
<table-kw>Slide with table
<map-kw>Slide with map<hr/>
<scorm-level-0 -allrefs>Only complete presentations<hr/>
<scorm-level-2>Only literature references<b> - </b> 
<txt-sep -scorm-level-2>exclude literature references
<link-type>Only useful links<b> - </b> 
<link-type>exclude useful links 
<txt-sep -scorm-level-2 -link-type>Exclude references and links