Documentation bug: replacements for deprecated keywords can be hard to find

[EzryStIago]

I'm using some config files that use older parameters:

• targetForceExponent
• centerReference
• rotateReference

NAMD provides the warning:
Warning: keyword targetForceExponent is deprecated. Check the documentation for the current equivalent.

But these keywords are no longer in the ColVars documentation so it's harder to find the replacement. Just a note in the relevant sections so a ctrl-F can find the new keyword would be helpful.

Maybe something like:

lambdaExponent — Exponent in the time-dependence of the force constant
Default: 1.0 [ decimal equal to or greater than 1.0, context: harmonic ]
Formerly: targetForceExponent

Sets the exponent, α, in the function used to vary the force [...]

[giacomofiorin]

Hi @EzryStIago! I think we simply forgot to add the deprecated keyword in the section dedicated to that purpose:
https://colvars.github.io/master/colvars-refman-namd.html#sec:colvars_config_changes