[TYPO3-commerce] Difference between constant NORMALArticleType and regularArticleTypes?

[Diego Pino]

Hello!

In my CMS I got two types of articles, ids: '1' (books) and '4' (other 
items). To be able to list the 'other items' in the Basket, for 
instance, I updated the constant regularArticleTypes as:

regularArticleTypes = 1, 4

This works fine.

Then I was debugging the extension 'com_defaultstock' (for stock 
handling), when I noticed a constant called NORMALArticleType (defined 
at 'commerce/ext_localconf.php'). Unlike regularArticleTypes, this 
constant has to be an int. There are some checkings in the extension 
related with this constant, and in consequence the stock is not updated 
for 'other items' when an article is purchased.

Later, grepping commerce I noticed that 'NORMALArticleType' is used in 
other parts of the code. My question is, what is the difference between 
these two constants. I thought that 'regularArticleTypes' defined the 
list of 'article_type_uid' allowed to be sold.

Regards,

Diego