Minor edits to improve English.

How-to:-improve-performance.md

@@ -1,11 +1,11 @@
-A little guide to increase the performance of a friendica site
+A little guide to increase the performance of a Friendica site
 
 At first
 ========
 
-Feel free to ask the friendica support at 
+Feel free to ask at Friendica support at 
 <https://helpers.pyxis.uberspace.de/profile/helpers> if you need some 
-clarification about the following instruction or if you need help in any 
+clarification about the following instructions or if you need help in any 
 other way.
 
 System configuration
@@ -16,48 +16,48 @@ Please go to /admin/site/ on your system and change the following values:
 * Set "JPEG image quality" to 50. 
 
 This value reduces the data that is send from the server to the client. 
-50 is a value that doesn't influences image qualitity too much.
+50 is a value that doesn't influences image quality too much.
 
 * Set "OStatus conversation completion interval" to "never".
 
-if you are having many OStatus contacts then completing of conversations 
+If you have many OStatus contacts then completing of conversations 
-can be very time wasting. The downside: You won't see every answer in 
+can be very time wasting. The downside: You won't see every comment in 
-OStatus conversations.
+OStatus threads.
 
 * Set "Path for lock file" to an empty folder outside your web root.
 
-Lock files help avoiding the situation that several background processes 
+Lock files help avoid the possibility of several background processes 
-run at the same time. 
+running at the same time. 
 
-For example: It can happen the the poller.php is working longer than 
+For example: It can happen that the poller.php takes longer than 
-expected. When there would be no lock file than maybe several instances 
+expected. When there is no lock file, it is possible for several instances 
-of poller.php would run at the same time - which would slow down the 
+of poller.php to run at the same time - which would slow down the 
-system and would affect the maximum numbers of processes and database 
+system and affect the maximum numbers of processes and database 
 connections.
 
-Please define a full file path that is writable by the web server 
+Please define a full file path that is writeable by the web server 
-process. If your site would be located at "/var/www/sitename/htdocs/" 
+process. If your site is located at "/var/www/sitename/htdocs/" 
-you maybe could create a folder "/var/www/sitename/temp/".
+you could maybe create a folder "/var/www/sitename/temp/".
 
 * Enable "Use MySQL full text engine"
 
-When using MyISAM (default) this speeds up the search.
+When using MyISAM (default) this speeds up search.
 
 * Set "Path to item cache" to an empty value outside your web root.
 
 Parsed BBCode and some external images will be put there. Parsing BBCode 
-is a time wasting process that also uses much CPU speed.
+is a time wasting process that also makes heave use of the CPU.
 
-You can use the same folder like you used for the lock file.
+You can use the same folder you used for the lock file.
 
 Warning!
 --------
 
-The folder for the item cache is cleaned up regularly. Every file that 
+The folder for item cache is cleaned up regularly. Every file that 
-exceeds the cache duration is deleted. If you accidentally would point 
+exceeds the cache duration is deleted. If you accidentally point 
-the cache path to your web root then you would delete your web root!
+the cache path to your web root then you will delete your web root!
 
-So ensure twice that the folder only contains temporary content that can 
+So double check that the folder only contains temporary content that can 
 be deleted at any time.
 
 You have been warned.
@@ -78,7 +78,8 @@ Alternate Pagination
 ### Description
 
 This plugin reduces the database load massively. Downside: You can't see 
-anymore the number of pages.
+the total number of pages available at each module, and have this replaced
+with "older" and "newer" links.
 
 ### Administration
 
@@ -89,14 +90,14 @@ Privacy Image Cache
 
 ### Description
 
-This plugin is prefetching external content and stores it into the 
+This plugin pre-fetches external content and stores it in the 
 cache. Besides speeding up the page rendering it is also good for 
-keeping the privacy of your users, since embedded pictures would be 
+the privacy of your users, since embedded pictures are 
 loaded from your site and not from a foreign site (that could spy on the 
 IP addresses).
 
-Additionally it helps with content from external sites that are having a 
+Additionally it helps with content from external sites that have
-slow performance or that are aren't online all the time.
+slow performance or aren not online all the time.
 
 ### Administration
 
@@ -124,12 +125,12 @@ every page:
 * Others: Everything else :)
 * Total: The sum of all above values
 
-These values are showing your performance problems. 
+These values show your performance problems. 
 
 Webserver
 =========
 
-If you are using apache please enable the following modules.
+If you are using Apache please enable the following modules.
 
 Cache-Control
 -------------
@@ -175,7 +176,7 @@ APC
 
 APC is an opcode cache. It speeds up the processing of PHP code. 
 
-When APC is enabled, friendica uses it to store configuration data 
+When APC is enabled, Friendica uses it to store configuration data 
 between different requests. This helps speeding up the page creation 
 time.
 
@@ -184,7 +185,7 @@ Database
 
 There are scripts like tuning-primer.sh <http://www.day32.com/MySQL/> 
 and mysqltuner.pl <http://mysqltuner.pl> that analyzes your database 
-server and that are giving hints on values that could be changed.
+server and give hints on values that could be changed.
 
 Please enable the slow query log. This helps being aware of performance 
 problems.