# Escaped special characters in the program name ("&", ":")
program&amp;co&amp;sons:: ERROR, syntax error.
program&colon;deep&colon;deeper:: ERROR, syntax error.
# Escaped special characters in the filename ("&", ":" , "(", ")")
program: file&amp;co&amp;daughters: ERROR, syntax error.
program: file&colon;deep&colon;deeper: ERROR, syntax error.
program: file&lpar;42&rpar;&lpar;13,37&rpar;: ERROR, syntax error.
program: file&lpar;42&rpar;(13,37): ERROR, syntax error.
# However the number symbol ('#') is allowed in the filename and the 
# &num; entity is not unescaped
program: &num;rare&num;filename&num;: ERROR, syntax error.
program: #rare#filename#: ERROR, syntax error.
# Escaped special characters in additional position information (datablock)
# and the message itself ("&", ":")
program: filename data_additional&colon;information&amp;position: ERROR, syntax error&colon; this &amp; that.
# Escaping the first symbol of escape sequences to allow them in the plain text
# of all fields
program&amp;amp;relatives: file&amp;amp;children data_datablock&amp;amp;info: ERROR, syntax error &amp;amp; crash results.
