The Programmers Reference Manual, which includes the Language Reference and Frequently Asked Questions is supplied in HTML help format.
This "CHM" help format has been used to accompany all the development tools supplied with ESL.
Due to a Microsoft security update, when you open a CHM file from a UNC path or from a network drive, even if the network drive is mapped to a drive letter, the HTML Help viewer opens and instead of displaying the topic, it displays an error message "Action cancelled" in the topic pane.
Please contact the Helpdesk, if you require the CHM files to run from a Network drive.