+----------+------------------------+-----------+---------------------+---------------------------+
| Operator | Extent modifier | Full line | Extent | Target |
+----------+------------------------+-----------+---------------------+---------------------------+
| | usually related | | Text object | left-right, word, |
| | to the line | | selection, etc. | text object motions, etc. |
+----------+------------------------+-----------+---------------------+---------------------------+
| a append | A (at eol) | | a 'a' (aw='a word') | b back word |
| c change | C (from cursor to eol) | | i innner | B Block ({...}) |
| d delete | D (from cursor to eol) | dd | s surround(*) | e end of word |
| f find | F (previous) | | t to | p paragraph |
| i insert | I (at start of line) | | 1,2,3,... | s sentence |
| o open | O (line before) | | | t tag |
| v visual | V (visual line) | | | w word |
| y yank | | yy | | W big_word |
| | | | | '," quotes |
| | | | | (,[,{ |
| | | | | $ end of line |
+----------+------------------------+-----------+---------------------+---------------------------+