View source for Affixes to Hoklo names

http://www.taipeitimes.com/News/editorials/archives/2014/10/07/2003601465

there are some affixes to Hoklo names, such as {{gs|tor|堵}}, that often appear in names of places along rivers and are often preceded by numbers. 

* [[Sietor]] ({{wt|四堵}}): [[Sinpag Chi]], [[Pvinaa Khw]]
* [[Goxtor]] ({{wt|五堵}}): [[Køelaang]] & [[Taipag]]
* [[Lagtor]] ({{wt|六堵}}): borough of Køelaang, [[Chittor Khw]]
* {{gs|Chittor|七堵}}: Køelaang
* [[Pøehtor]] ({{wt|八堵}}): Køelaang, [[Loafnloarn Khw]]

are some, but nobody seems to be able to accurately explain what to means.