Table 1.

Comparison between the old Textpresso system and Textpresso Central

Feature	Textpresso	Textpresso Central
Full text searching	✔	✔
PMC OA corpus		✔
Custom corpus creation		✔
Literature subdivision		✔
Keyword and category searching	✔	✔
Search by paper section	✔
Keyword exclusion, search filters	✔	✔
Category browsing and searching	✔	✔
Sort by relevance or year	✔	✔
Search results viewed within context of full text		✔
Highlight and annotate full text		✔
Customizable annotation interface		✔
Communication with external curation databases		✔
UIMA compliant		✔