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When multiple users can edit the same document simultaneously, a multi-user undo is needed. Global multi-user undo reverts the latest action made to the document, regardless of who performed the edit. Local multi-user undo only reverts actions done by the local user, which requires a non-linear undo implementation.
[a] The typical way to effect a reversion is to use the "undo" button on the article's history page, but it isn't any less of a reversion if one simply types in the previous text. A single edit may reverse multiple prior edits, in which case the edit constitutes multiple reversions.
2. On the diff page, click "undo" at upper right, above the right column of text (Figure 5-3). The Wikipedia software tells you whether it can revert the edit(s). The more consecutive edits you're trying to undo at the same time, assuming none is the current version, the less likely that the software can actually do an undo of the whole group.
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The inversion from verb—object to object—verb on which copy and paste are based, where the user selects the object to be operated before initiating the operation, was an innovation crucial for the success of the desktop metaphor as it allowed copy and move operations based on direct manipulation. [3]
The implementation contains multiple vulnerabilities rendering it insecure. [5] In Office XP and 2003 an opportunity to use a custom protection algorithm was added. [4] Choosing a non-standard Cryptographic Service Provider allows increasing the key length. Weak passwords can still be recovered quickly even if a custom CSP is on.
The condition/action model is also similar to aspect-oriented programming, where when a join point (condition) is reached, a pointcut (action) is executed. A similar paradigm is used in some tracing frameworks such as DTrace , where one lists probes (instrumentation points) and associated actions, which execute when the condition is satisfied.