BCTSelectButton is a set of 2 buttons to drop on a Calendar Window to convert it to a Calendar Select Procedure. 

This prepares the alerts for double clicking to select the date, and loads the date into the INI file for passing back to the calling Procedure.  You must also have the This Calendar is A selector checked on the Calendar Prompts   when you put in on a procedure and use it for a Calendar Lookup. Because they are controls, you can change properties and salt to taste.

Ini File for Parameter is used for passing the dates back and forth. .\BST.INI is used thru out the templates for storing format settings for the different templates and passing dates.  Usually there is no need to change this setting.  It is stored in the root directory of the app, allowing individual settings for users.  It must match the setting in the Calendar/GetDateButton used for the selector process.