Overview of Colvars module and links to documentation

The collective variables module (Colvars) is an independently-developed library for enhanced sampling simulations, licensed under the GNU lesser general public license (https://www.gnu.org/licenses/lgpl-3.0.en.html) and distributed together with NAMD. Full documentation and examples for this software, including any syntax and features specific to this version of NAMD, can be accessed at the following links:

• (HTML) https://colvars.github.io/namd-3.0/colvars-refman-namd.html
• (PDF) https://colvars.github.io/namd-3.0/colvars-refman-namd.pdf

See in particular the section regarding compatibility between versions of NAMD:
https://colvars.github.io/namd-3.0/colvars-refman-namd.html#sec:colvars_config_changes

When using the Colvars module please cite the following publication, alongside other publications for specific features as listed in the code's documentation and in the usage summary printed when running a Colvars-enabled NAMD simulation.

G. Fiorin, M. L. Klein, and J. Hénin, Molecular Physics 111 (22-23), 3345-3362 (2013). https://doi.org/10.1080/00268976.2013.813594

Please ask any usage questions through the NAMD mailing list, and any development questions through the Colvars GitHub repository at https://github.com/Colvars/colvars.