... all¹

Therefore, device drivers are implemented as servers running in user mode.

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... set²

Sartoris has 22 system calls, quite numerous when compared, for example, with the 7-12 system calls used in different versions of the L4 $\mu$-kernel.

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... supported³

Of course, the operating system could easily implement such functionality.

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...MAX_TSK⁴

A constant defined by the implementation

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... memory⁵

The organization of the tasks in physical memory is therefore under absolute control of the operating system.

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... words⁶

The actual unit in which size is expressed is defined by the implementation.

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... task⁷

What is meant here is that it can be accessed by any thread of the corresponding task.

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... gates⁸

An interrupt gate is very similar to a call gate, but the processor handles the interrupt enable flag differently.

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