It is possible to hide Navigation or Settingsblock in a course by editing the block and by setting "On this page - Visible" to No. The block is greyed out end you can get it back by reversing the setting. But if you hide (in this manner) both Settings AND Navigation they seems to be forever gone.... You can´t get them back by adding a new block - those blocks are not there...
Anyone knows if you can hide these blocks in a specific course (we need to have a very, very clean inteface for some students with special needs) and with the option to get them back?