The only reason i can think of when this is useful is when using the circuit for spice.
Get Schematic Symbol For Fixed Resistor Pictures. 'resistance' is a quantity, wheras a 'resistor' is a circuit component. There are many schematic symbols.
Variable Resistor - Working, Construction, Characteristics ... from www.circuitstoday.com
The schematic symbol for fixed resistor is shown in figure 1. It is a marker on the resistor symbol to indicate pin 1. If you use a generic resistor schematic symbol, then always when you generate a bom (bill of material), you will have to manually edit it.
The rectangular box is more widely used in european firms. In my experience, the zigzag symbol is widely used in us firms and asian firms; The arrow indicates the wiper terminal. There are many schematic symbols.
