BLOCK PROCESSING APPARATUS

A block processing apparatus includes a random access memory (RAM), a keyboard with breakpoint mark keys and a ruled line block key, a central processing unit (CPU), a character generator. The RAM includes a document memory for storing a character array, a block memory, a tab memory, a vertical ruled line table, a small block range table, a lateral ruled line No. memory area, an area for storing the number of large blocks, an area for storing the number of small blocks, a successive flag area, a character flag area, a carriage position memory and a cursor position memory. These memories in the RAM cooperates to convert marks entered at the keyboard to a plurality of types of ruled line patterns in accordance with the relative relationships between the characters and the marks. The resultant block document is stored in the block memory.