+# Registers
+```
+C-x r s <?> Copy region into register
+C-x r i <?> Insert text from register
+C-x r Space <?> Save point position to register
+C-x r j <?> Jump to point position at register
+```
+
+# Mouse secondary selection
+```
+Meta-Drag Set selection
+Meta-Right-Click Yank secondary
+```
+
+