"TODO [#A] Write the parser work rust"

"A heading carrying a keyword, a priority, tags and a property drawer."

"DONE Nested and finished"

"Sub-headings nest by star count."

"[#C] Priority without a keyword"

"A priority cookie can stand alone."

"TODOs are not a keyword"

"The word boundary matters: this heading has no TODO keyword."

"DONE"

"A keyword with no title at all."