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The HELM editor allows the user to create and manipulate large macromole= cules. You can import and export in a variety of formats, but HELM underlie= s the internal processes.
This editor only supports HELM1 and has been superseded by the web-edito= r which supports both HELM1 and 2.
We have compiled the code so you can try the HELM editor&= nbsp;for yourself.
HELM Editor vi= a Java Web Start
HELM Editor = local installation pack
HELM Editor User Guide (document)
Videos - NB there is no sound on these vi= deos
Source code on Gi= tHub
HELM Editor Release notes and API Specifi= cation
htt= p://pistoiahelm.github.io/HELM_Editor_Release_Notes.html
HELM is an open source project released under the MIT licen= se. However it has some dependencies on third party tools.
HELM Editor requires MarvinBeans version 5.0 or higher from ChemAxon.&nb= sp;A copy of the required library (MarvinBeans-5.0.jar) is included for you= r convenience. ChemAxon has graciously agreed to provide a royalty-fre= e license for the utilization of MarvinBeans directly through the HELM edit= or and notation toolkit (specifically for operations pertaining to the chem= ical representation of HELM monomers and macromolecules.) Please contact&nb= sp;Cassell Essell (cessell@chemaxon.com) to obtain this lice= nse. Utilization of the MarvinBeans library outside of the aforementio= ned scope and beyond a trial basis requires the procurement of a regular Ma= rvinBeans license.
The web-editor replacement does not have any dependencies on non-open so= urce third party tools.
The HELM editor is code that was originally used within Pfizer. Bef= ore putting it in the public domain the project removed dependenc= ies on internal Pfizer systems including their own monomer database. T= he version provided as open source code therefore uses monomer definitions = contained in an XML file which is held locally. If you intend to take use t= he HELM editor as part of your organisations system, we highly re= commend that you create an internal monomer database, so your organisation = has a consistent set of monomers to use. You will need to adjust the c= ode provided to point to it.
As this is an open sourc= e project you are at liberty to replace MarvinBeans 5.0 with your preferred= tool. If you do this, please consider donating t= he modified code base back to the project.