Focus PAD for the Snippet ''an English-language pangram — a sentence that contains all of the letters of the English alphabet'

It seems clear that English is a type of Language. More specifically, it is implied that English is a type of the more abstract AlphabetLanguage, where an Alphabet references one or more Letter (shared aggregation has been used here). A Pangram has at least as many letters as the number of unique letters in theAlphabet it is associated with, and has at least one of each of those letter (this is difficult to express in OCL).

While Generalizations and Associations may be collected as elicited members of a Snippet this can quickly lead to clutter in the /member list display, and has been omitted here.

The analysis has also been supported by an additional Snippet:

Wikipedia: 'The modern English alphabet is a Latin alphabet consisting of 26 letters, each having an upper- and lower-case form.'

In addition to obtaining the multiplicity 26 for the number of letter:Letter with EnglishAlphabet, Partial analysis also yields the following value properties:

- Letter::isUpper:Boolean, Letter::isLower:Boolean

- Alphabet::isLatin[1]:Boolean

- EnglishAlphabet::isLatin[1]:Boolean=true{readonly,redefines isLatin}

A Constraint for isUpper vs isLower could also eventually be included.

The FoxDogPangram is specific to the EnglishAlphabet as a kind of AlphabetLanguage.

Up next

Focus BDD for block EnglishPangram

Notes

[TIP]{EDITORIAL} In Webel Parsing Analysis every Package, Model, or Diagram used to perform Parsing Analysis MUST have the stereotype keyword «pa» applied, and MUST live under a top-level Model or Package 'source' separate from the rest of the project model.

[POLICY, STYLE]{STRICT} Webel «pa» Parsing Analysis Diagrams (PADs) are "scratchpads" used to elicit model elements traceably from text Snippets (extracts from source Documents). While BDDs are a good initial choice, most types of SysML diagram can be used as a «pa» diagram.

[MODELLING, NAMING, POLICY]{STRICT} Webel Parsing Analysis: Acronym: PAD = Parsing Analysis Diagram (may be nearly any diagram type, except those types that must be owned by an elicited model element)

[DISPLAY, MODELLING, POLICY]{STRONG} Webel Parsing Analysis: A "focus" Parsing Analysis Diagram (PAD) for one or more Snippets SHOULD always show the /member tagged value of every Snippet.