You can choose to skip all steps in a Test case. In this case, since there are no steps to execute, Dry run will not be launched.
You can use the Shift key to select multiple steps. Control key multi-select are only allowed within Task's steps.
Breakpoint is allowed if a step is already skipped. Also, skip is allowed on a step with breakpoint.
If you select the Task header and choose to skip, then only that Task block gets skipped. It will not skip other instances of the same task that may present in the test case or in other test cases.

Note: Task header skip is not allowed in multi-select as shown below.

If a task exists multiple times in test cases and you choose to skip particular steps in it, then skip will be reflected in all instances of the task present in all the test cases.

You cannot modify skipped step(s) but can move the skipped step(s) up/down. However, user can perform delete operation on it.
You can add a step in between two skipped steps.

User gets an option 'Skip Task Block', 'Skip', 'UnSkip Task Block' and 'UnSkip' on context menu.

If/Else/End If/Else If is not allowed to skip neither in single selection nor in multiselection. However if user try to skip a complete task and a task contains conditional steps, all the task steps including conditional steps will be skipped.

Complete task skip does not allow add, delete, modify and move up/down operations.
Multiple users are not allowed to modify same step simultaneously.
Skip operation on a task step is similar to modify operation on a task and hence all the verifications and rules that are applicable to a normal task modification will be applicable to skip operation.

Please note: This functionality is applicable to both skip and unskip of step(s).

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