fix links.md throughout book

_includes/cxnotes.md

@@ -12,6 +12,6 @@ The book is an integrated whole. Every word aids comprehension, including front
 
 ##### links
 
-- [colored](/) word: a link.
+- [colored](/) words are links
 - [*italicized*](https://foodnsport.com) link: a book title
 - if also [*asterisked*](/nhs.pdf)\*, download or read book for free

_includes/cynotes.md

@@ -1,3 +1,3 @@
-- [external links](/) are listed at the end of the book with addresses, in order of appearance
-- [links](/front/notes#links) with number or letter: crosslinks to sections within the book. In this example, it links to this very section, "links", in element _b_, notes.
+- [external links](#external-links) are listed at the end of the book
+- a [link](/front/notes#links) with a number or letter crosslinks to a section within the book. The current example crosslinks to this very section, "links", here in element _b_, notes.
 

_includes/cznotes.md

@@ -1,8 +1,8 @@
 ##### media
 
-Paper or e-paper is best for reading. Print a paper copy, or buy one: ([write](/back/services#write)). An 8" or 10" e-paper device from an established company will do. The Dasung or Onyx monitors are best for writing and working.
+Paper or e-paper is best for reading. Print a paper copy, or buy one: ([write](/back/services#write)). 8" or 10" e-paper devices from established companies are good. Dasung or Onyx monitors are best for writing and working.
 
-Avoid backlit screens: computers, tablets, phones. They irritate the eyes, disrupt concentration, and lower comprehension.
+Avoid backlit screens for reading: computers, tablets, phones. They irritate the eyes, disrupt concentration, and lower comprehension.
 
 ##### latest
 

_pages/back/services.md

@@ -80,7 +80,7 @@ $40.
 
 I design and build darkrooms as part of supporting [retreats](/back/services#retreat), from scratch or in existing buildings. [Email](/about#contact) me.
 
-See my [hygienic house](/plan) for some of my latest thinking. A vaulted mobile building is also in the works.
+See my [hygienic house](/plan) for some of my latest thinking. A vaulted mobile shelter is also in the works.
 
 $40/hr.
 

_pages/darkness.md

@@ -168,7 +168,7 @@ plan: door seal - [download](/img/plan/door-seal.pdf)
 I tried several methods of darkening windows in ~100 spaces. Two work well: double blind and panel. 
 Plans and instructions follow.
 
-Notes on others I tried—foil, velcro, roller blind—are below. Their descriptions, instructions, and drawings are archived in the [zip file](/darkroom-retreat.zip).
+Notes to others I tried—foil, velcro, roller blind—are below, with a link.
 
 If your room's air supply comes through your window, attach a helix vent to the back of the blind. If the recess doesn't allow this, attach the vent to the front. Test position of vent before cutting a slot for it to make sure it clears the window frame and handles. The slot jig usually works. See [helix vent parts](/air#helix).
 
@@ -333,7 +333,7 @@ Alas, most Americans, Canadians, and Australians miss them without knowing it. P
 
 #### zip
 
-Here are notes on techniques I don't use anymore. But I've kept their, photos, plans and instructions in the [zip file](/darkroom-retreat.zip)
+Here are notes on techniques I don't use anymore. I've archived their, photos, plans and instructions in the [zip file](/darkroom-retreat.zip).
 
 ##### foil
 

_pages/design.md

@@ -204,14 +204,14 @@ So rectilinear buildings are not just acceptable for short retreats, but perfect
 
 A good building for the long-term is round or has five or more walls in a regular polygon. Walls can be rectangles. Right angles where floors meet walls are fine. But not where walls meet ceilings or each other, as in orthogonal floor plans.
 
-Happily, a handful of elegant, cheap, quick, [round shelter designs](/other/links) exist for new buildings. My hygienic house [plan](/plan) below, is also one. 
+Happily, a handful of elegant, cheap, quick, [round shelter designs](/other/links) exist for new buildings. They include my hygienic house, below. 
 
 It turns out that rectilinear construction is not simpler or easier. It's just a frame of mind.
 
 ~/~
 
 Now, let's learn to make our prison cells into escape vehicles. The next chapter, design, gives detailed instructions and plans for your very own darkroom.
 
-![plan: conic / hygienic house](/img/plan/image/conic.png)
+![plan: hygienic house / conic](/img/plan/image/conic.png)
 
-See [plan](/plan) on my website for a color sketch, downloads, and budget.
+See [plan](/plan) on my website for a color sketch, downloads, and budget. Also in zip file.

_pages/other/links.md

@@ -10,24 +10,27 @@ navnext:
 
 #### frameless
 
-For their simplicity, ease, economy, strength, beauty, and elegance, I recommend the following designs/methods for shelter construction.
+For their simplicity, ease, economy, speed, strength, beauty, and elegance, I recommend the following designs/methods for shelter construction.
 
-(Speed measured in hours, days, weeks):
+(Fastest possible construction times):
 
-[Self-Strutting Geodesic Plydome](https://web.archive.org/web/20050308102749/http://www.sover.net:80/~triorbtl/index1.html) (weeks)  
+[Self-Strutting Geodesic Plydome](https://web.archive.org/web/20050308102749/http://www.sover.net:80/~triorbtl/index1.html) (days)  
 Steve Miller's perfection of Buckminster Fuller's design for a frameless sphere. Write me for detailed plans.
 
-[Conic Shelter](https://conic.design) (weeks)  
+[Conic Shelter](https://conic.design) (days)  
 Chuck Henderson's sweeping, simple, brilliant, circled-square construction
 
+[hygienic house / conic](/plan) (days)  
+My adaptation of Chuck's conic with a cylindrical wall using the same building method.
+
 [Hexayurt](http://www.hexayurt.com/) (hours)  
 Vinay Gupta's 3-hour, $200, portable pop-up shelter + autonomous infrastructure
 
-[Superadobe](https://calearth.org/) (weeks)  
+[Superadobe](https://calearth.org/) (days)  
 Nadir Khalili's giant upside down coil pot shelters elegantly made from war materials
 
-[Cardboard Geodesic Dome](https://www.cccoe.net/stars/) (days)  
-I started work on improving this. See pics of Seattle and Sweden Domes [here](https://andrewdurham.shutterfly.com).
+[Cardboard Geodesic Dome](https://www.cccoe.net/stars/) (hours)  
+Fun for kids and grown-ups alike
 
 The above designs are all **shell** constructions. That is, they are frameless. Why? It is true architecture: the technique of forming arches from separate pieces of materials to create covered space.