Provides a test for the start of each line in plain paragraphs that indicates whether the line might
be the start of a block identified by this parser.
Without providing such a test the type of block produced by this parser can only occur after a blank line.
Provides a test for the start of each line in plain paragraphs that indicates whether the line might
be the start of a block identified by this parser.
Without providing such a test the type of block produced by this parser can only occur after a blank line.