- From: Rick Jelliffe <rjelliffe@a...>
- To: "Roger L. Costello" <costello@m...>
- Date: Fri, 11 Apr 2014 09:24:26 +1000
If the number or range of steps is large or convoluted and their order or selection is really important, promote that order to an element.
<aircraft-approach-procedure>
<order>
<transition step="s1" condition="is-controlled()"/>
<transition step="s3"/>
<transition step="s5"/>
<order/>
<steps xml:lang="en">
<transition id="s3">Enter glide slope</transition>
<transition id="s2">Hide the whiskey</transition>
<transition id="s5">Correct for wind conditions</transition>
<transition id="s4">Wake the pilot</transition>
<transition id="s1">Contact control tower</transition>
</steps>
</aircraft-approach-order>
Contrary (to some extent) to what Frank said, every document type does embodies a theory about its use-case: the more complex the use case, the more likely that extra layers of clearly labelled indirection may be appropriate.
Cheers
Rick
On 10/04/2014 9:46 PM, "Costello, Roger L." < costello@m...> wrote:
Hi Folks,
Thanks again for the excellent responses.
Recall that I advocated for adding an attribute that indicates the order in which a list of elements are to be evaluated, e.g.,
<aircraft-approach-procedure>
<transition step="2">Enter glide slope</transition>
<transition step="3">Correct for wind conditions</transition>
<transition step="1">Contact control tower</transition>
</aircraft-approach-procedure>
The argument that dissuaded me most powerfully was this simple message from a colleague:
What is the benefit of adding @step (a
sequence number)? We are not using
key punch cards, so we will not drop it.
/Roger
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