REGEDIT4

[HKEY_CLASSES_ROOT\ttffile\shell\Convert to XML]
@="Convert to XML"

[HKEY_CLASSES_ROOT\ttffile\shell\Convert to XML\command]
@="start.exe \"C:\\Program Files\\f\\TTX\\tt2xml.py\" \"%1\""

[HKEY_CLASSES_ROOT\xmlfile\shell\Convert to TTF]
@="Convert to TrueType font"

[HKEY_CLASSES_ROOT\xmlfile\shell\Convert to TTF\command]
@="start.exe \"C:\\Program Files\\f\\TTX\\xml2tt.py\" \"%1\""