The following expressions are used to explain keyboard operations:
∙Depress [SHIFT] means: depress the [SHIFT] key.
∙Depress [1] [4] [1] or [1, 4, 1] means: depress the [1], [4], then the [1] keys.
∙Depress [SHIFT] + [1, 4, 1] or [R + 1, 4, 1] means: while depressing the [SHIFT] key, depress the [1], [4], then the [1] keys.
The following abbreviations are used throughout this documentation:
∙  | mm = millimeter  | ∙  | cm = centimeter  | 
∙  | um = micrometer  | ∙  | KB = kilobyte  | 
∙  | MB = megabyte  | ∙  | ns = nanoseconds  | 
∙  | A = ampere  | ∙  | MHz = megahertz  | 
∙  | mV = millivolt  | ∙  | Vac = voltage alternating  | 
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  | current  | 
∙  | Vdc = voltage direct current  | ∙  | h/s screw = hexagon socket  | 
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  | screw  |