C API Helper functions

rl3_make_simple_annotation_def

const char* rl3_make_simple_annotation_def(struct RL3_Engine* engine, const char* target, const char* pattern, const char* name);

Create a simple (i.e. uncompouned) annotation pattern:

engine:	a pointer to an engine structure
target:	targeted text
pattern:	a pattern to be searched
name:	fact name (label)
Returns:	annotation definition

const char* rl3_html_to_text(struct RL3_Engine* engine, const char* html, const char* section);

Parse HTML section:

engine:	a pointer to an engine structure
html:	input HTML string (zero terminated)
section:	a section to be extracted (body, title, description, keywords, abstract, author, copyright, publisher, classification, rating, coverage, category,pathway, apath, tlinks, hidden, frame_src, link_href, ads)
Returns:	parsed HTML section