• a : binary_program
• b : binary_program
• cols : binary_program
• field : line_fields
• file : memnod
• line : line_fields , memnod
• max_rows : binary_program
• next : memnod
• prev : memnod
• rows : binary_program
• sense : binary_program
• size : line_fields , memnod
• tag1 : memnod
• tag2 : memnod
• used : line_fields