A built-in template for a WordPress main plugin file. It is used each time when you create a new project of the WordPress Plugin type.
The template is editable. Along with PHP statements, expressions and comments you can also use the predefined variables listed below. Every variable is expanded like macros into the corresponding value.
By means of the #parse directive, you can include templates from the Includes tab by specifying the full name of the desired template as a parameter in quotation marks.
Predefined variables take the following values:
${PLUGIN_NAME}   Current plugin name derived from directory name
${FILE_NAME}   Current file name
${USER}   Current user system login name
${DATE}   Current system date
${TIME}   Current system time
${YEAR}   Current year
${MONTH}   Current month
${DAY}   Current day of the month
${HOUR}   Current hour
${MINUTE}   Current minute
${PRODUCT_NAME}   Current IDE name
${PROJECT_NAME}   Current project name
${DS}   Dollar sign, evaluates to a plain '$' character.