| undeclared symbol(technology, expression, arranging, engineering, programming) |
| undeclared symbols(technology, expression, arranging, programming) |
| undefined symbol(technology, expression, engineering, arranging) |
| undefined symbols(technology, expression, arranging, programming) |
| unexpected symbol(technology, expression, arranging, programming) |
| unnegated symbol(expression, technology, machine, automation) |
| upright bar symbol(expression, technology, machine, automation) |
| use of symbol tables(technology, expression, arranging, programming) |
| user-defined symbol(expression, automation, mechanization, automatization) |
| verbatim symbol(technology, expression, arranging, programming) |
| versatile symbol generator(technology, expression, engineering, arranging) |
| version symbol(technology, expression, engineering, arranging) |
| vertical bar symbol(expression, technology, machine, automation) |
| virtual symbol(expression, technology, machine, automation) |
| visual symbol(expression, communication, information, advertising) |
| warning symbol(expression, connection, communications, telecommunications) |
| wire symbol(technology, expression, engineering, arranging) |
| word symbol(expression, communication, information, advertising) |
| wrench symbol(technology, expression, engineering, arranging) |
| zodiac symbol(technology, expression, engineering, arranging) |