Markup and flag

I. About bookmark
UseBookmarkProperty to save the location of the current record and return to the record at any time. Only when the bookmarks function is supportedRecordsetObject, bookmarks are available.
OpenRecordsetEach record of an object has a unique bookmarks. To save the bookmarks of the current recordBookmarkThe attribute value is assigned to a variable. That is, mybookmark = MRC. bookmark
If you want to quickly return to the record at any time after moving to a different recordRecordsetObjectBookmarkProperty is set to the value of the variable. That is, MRC. Bookmark = mybookmark
Ii. Boolean
Txtcourseno. Enabled = false
Txtcoursename. Enabled = false
Combocoursetype. Enabled = false
Txtdes. Enabled = Fals
McClean = true' is equivalent to binding the status of the above control
'Boolean variables are usually an indicator,
'Can also be seen as a sign, which is a comprehensive interface for several conditions,
'Using this integrated interface is the basis for writing a program.
Conclusion: bookmarks are used for marking.
Boolean variables are used for marking