Keys for resolving OS x cursor positioning

When using a Macbook or Apple Wireless keyboard, because the keyboard is a 78-key shrink-type laptop keyboard, it is not a traditional 109-key keyboard ｡ Many of the keys are missing, such as: Home,end,pageup,pagedown and other text editors often use the positioning button ｡ After the keyboard shrinks, we can still use the following hotkeys for quick document positioning:

"Control" + "Up"/"Down" = prev/Next

"Control" + "left"/"right" = cursor positioned at the beginning/end of the line

"Option" + "left"/"right" = the cursor moves one word to the left/right

"Option" + "Up"/"down" = cursor positioned at the beginning/end of the paragraph

"Command" + "Up"/"down" = to reach the top/bottom of the page

"Option" + "delete" = delete one of the preceding words

"Command" + "delete" = delete all characters before the line at the cursor

===== Update from Comments =====

Nimpingson: Fn + LEFT arrow/right button head = top/Bottom 21:FN + up/down = prev/Next

BILLY_BAY:FN + DELETE = Del