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SRC lenses when ARC - checking this option allows SRC lenses (scratch coated) to be selected when ARC is requested for a job.  If left unchecked, then only uncoated lenses will be selected when ARC is requested for a job.

Example

An example will illustrate how the alias entries work. 

Consider a simple example where the lab has SV lenses in both semi-finished and finished, as well as SVFLAT finished lenses (which come in the same power range, diameter and coating as SV finished, but are manufactured with a flatter front curve), and SVD semi-finished blanks (blanks originally released to be digital-compatible, hence the D at the end of the code). 

When a SV job is received, the lab wishes to include all SV, SVFLAT and SVD blanks when looking for the best lenses to use for an order.  For a sample job such as a -2.00 sphere in CR39, the following lenses might be available in the lab:

finished SV -2.00 70mm 

finished SVFLAT -2.00 70mm

semi-finished SV 450-base 70mm

semi-finished SV 450-base 76mm

semi-finished SVD 425-base 70mm

semi-finished SV 650-base 70mm

semi-finished SV 650-base 76mm

semi-finished SVD 625-base 70mm

The alias could be set up as follows, this is a linked-link which flows from one entry to the next:
SV → SVFLAT 
SVFLAT → SVD
SVD → SV

Note that the list cycles back to the starting point; thus it does not matter what the first lens style is, Rx-Universe will cycle through all of the options.

On the individual entries, such as:
Image Added

It is worth explaining the "Extended List" option.  Using the above 8 possible lens blanks, and the alias sequence specified above, below shows the effect of checking the Extended List box

In the first column, with the option NOT checked, all items are considered equivalent and are grouped as if they were all the same design.

In the second column, each different lens style is grouped together, in the sequence that was specified in the linked-list alias path.