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ER is used in the construction "the X-er..., the Y-er...":

    +-DG-+                  +-DG-+
    |    |                  |    |
   The better it is,       the more people will use it
   The more people use it, the better it is
Such constructions always use comparative adjectives or adverbs. They consist essentially of two similar phrases, attached together by an ER link. (Any phrase that can occur in the first half can occur in the second, as the above examples suggest.) The comparative adjective is always the "head" of each phrase. Each comparative adjective must have the capacity to serve as either the first or second half of the expression. The complement links (i.e., those that connect within the phrase) are the same, whether the adjective is serving as a "first-half" or a "second-half". Such adjectives therefore have:
bigger: ( complement ) & DG- & ((Wd- & Xc+ & ER+) or ER-)
                                ----------------      ^ 
                                 for first-half  for second-half
                                   phrase           phrase
The DG- connects to the definite article "the"; the Xc+ connects to a comma; the Wd- to the wall; and the ER from one phrase to the other.

The connectors used within the phrase are mostly those discussed elsewhere:

	The bigger it is	AF+
	The more you run	Cs+
	The more you earn	B+
	The more money you earn Dm*w+
An exception is the following construction:
         |     |      |
   The better the computer , the faster the program
For such constructions, the word "the" has "TR- & U+". Nouns have U-; this special connector is disjoined with all other optional and mandatory connectors on nouns (except AN- and A-).

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