Block Commands
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 AppendScrbuff        <Ctrl BA>
 Copy                 <Grey +>
 CopyBlock            <Alt C> or <Esc><B><C>
 CopyOverBlock        <Alt Z>
 Cut                  <Grey ->
 DeleteBlock          <Alt G> or <Esc><B><D>
 DropAnchor           <Alt A>
 FillBlock            <Ctrl KL>
 GetScrbuff           <Ctrl BL>
 MarkBlockBegin       <Ctrl KB> or <Esc><B><B>
 MarkBlockEnd         <Ctrl KK> or <Esc><B><E>
 MarkCharacter
 MarkColumn           <Alt K>
 MarkLine             <Alt L> or <Esc><B><L>
 MarkWord             <Ctrl KT>
 MoveBlock            <Alt M> or <Esc><B><M>
 Paste                <Grey *>
 PasteOver            <Ctrl PrtSc>
 ShiftLeft            <Shift F7>
 ShiftRight           <Shift F8>
 StoreScrbuff         <Ctrl BS>
 UnmarkBlock          <Alt U> or <Esc><B><U>