Fixed indentation problems in documentation.

INSTALL

@@ -105,15 +105,15 @@ plugin section of the config file (default values are shown if applicable):
    that are still under development. Some system administrators may want to 
    disable certain Sieve extensions or enable those that are not available by 
    default. This setting can use '+' and '-' to specify differences relative to
-	 the default. For example `sieve_extensions = +imapflags' will enable the
-	 deprecated imapflags extension in addition to all extensions were already
+   the default. For example `sieve_extensions = +imapflags' will enable the
+   deprecated imapflags extension in addition to all extensions were already
    enabled by default. 
 
  sieve_global_extensions =
    Which Sieve language extensions are ONLY avalable in global scripts. This can
    be used to restrict the use of certain Sieve extensions to administrator
    control, for instance when these extensions can cause security concerns. This
-	 setting has higher precedence than the `sieve_extensions' setting (above),
+   setting has higher precedence than the `sieve_extensions' setting (above),
    meaning that the extensions enabled with this setting are never available to
    the user's personal script no matter what is specified for the 
    `sieve_extensions' setting. The syntax of this setting is similar to

doc/editheader.txt

@@ -3,7 +3,7 @@ Editheader Extension
 Relevant specifications
 =======================
 
-	RFC5293 - doc/rfc/editheader.rfc5293.txt
+  RFC5293 - doc/rfc/editheader.rfc5293.txt
 
 Description
 ===========
@@ -24,12 +24,12 @@ values are indicated):
 sieve_editheader_max_header_size = 2048
   The maximum size in bytes of a header field value passed to the addheader
   command. The minimum value for this setting is 1024 bytes. The value is in
-	bytes, unless followed by a k(ilo).
+  bytes, unless followed by a k(ilo).
 
 sieve_editheader_protected =
   A space-separated list of headers that cannot be added to nor removed from the
-	message header. The `Received:' and `Auto-Submitted:' fields are always
-	protected and the `Subject:' header cannot be protected, as required by the
+  message header. The `Received:' and `Auto-Submitted:' fields are always
+  protected and the `Subject:' header cannot be protected, as required by the
   RFC specification; adding one of these headers to this setting has no effect.
 
 Invalid values for the settings above will make the Sieve interpreter log

doc/include.txt

@@ -3,7 +3,7 @@ Include Extension
 Relevant Specifications
 =======================
 
-draft-ietf-sieve-include-05 - doc/rfc/draft-ietf-sieve-include-05.txt
+  draft-ietf-sieve-include-05 - doc/rfc/draft-ietf-sieve-include-05.txt
 
 Description
 ===========
@@ -25,8 +25,8 @@ specific settings. The following settings can be configured for the include
 extension (default values are indicated):
 
 sieve_include_max_includes = 255
-	The maximum number of scripts that may be included. This is the total number
-	of scripts involved in the include tree.
+  The maximum number of scripts that may be included. This is the total number
+  of scripts involved in the include tree.
 
 sieve_include_max_nesting_depth = 10
-	The maximum nesting depth for the include tree. 
+  The maximum nesting depth for the include tree. 

doc/spamtest-virustest.txt

@@ -3,7 +3,7 @@ Spamtest and Virustest Extensions
 Relevant Specifications
 =======================
 
-	RFC5235 - doc/rfc/spamvirustest.rfc5235.txt
+  RFC5235 - doc/rfc/spamvirustest.rfc5235.txt
 
 Description
 ===========
@@ -128,7 +128,7 @@ plugin {
   sieve_spamtest_status_header = \
     X-Spam-Score: score=(-?[[:digit:]]+\.[[:digit:]]).*
   sieve_spamtest_max_header = \
-   X-Spam-Score: score=-?[[:digit:]]+\.[[:digit:]] required=([[:digit:]]+\.[[:digit:]])
+    X-Spam-Score: score=-?[[:digit:]]+\.[[:digit:]] required=([[:digit:]]+\.[[:digit:]])
 
   sieve_virustest_status_type = text
   sieve_virustest_status_header = X-Virus-Scan: Found to be (.+)\.

doc/vacation.txt

@@ -3,8 +3,8 @@ Vacation Extension
 Relevant specifications
 =======================
 
-	RFC5230 - doc/rfc/vacation.rfc5230.txt
-	RFC6131 - doc/rfc/vacation-seconds.rfc6131.txt
+  RFC5230 - doc/rfc/vacation.rfc5230.txt
+  RFC6131 - doc/rfc/vacation-seconds.rfc6131.txt
 
 Description
 ===========