One of the documents that did not make the jump to the new Web Based Documentation was the Professional Series Portability Guide as mentioned in the release notes here: https://www.synergex.com/docs/versions/v1033/#Welcome.htm (Sub-heading "What's new?").

If there is still desire to port that documentation over a section should be included to account for 64bit issues; areas in code surrounding this portability should be called out specifically in that documentation.

Barring that there should be a section dedicated solely to 64bit transition considerations with links to the existing documentation points.