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|  | Vexillology is the study of the history, symbolism, and usage of flags
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|   | The vexillum — a flag-like object used as a military standard by units in the ancient Roman army
 Vexillology — vexillum + logia ('study of') | 
| Parts of a flag:
 Canton — the upper hoist quarter of the flagCharge — a figure or symbol appearing in the field of a flag
 Field — the background of a flag
 Finial — a protective cap atop a flagpole
 Fly side — the half or edge of a flag farthest away from the flagpole
 Hoist side — the half or edge of a flag nearest to the flagpole
 Length — the span of a flag along the side at right angles to the flagpole
 Width — the span of a flag down the side parallel to the flagpole
   
 
 
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