fix grammar

doc/manual/ffi.txt

@@ -70,8 +70,8 @@ the compiler to pass the type by reference (hidden pointer) to procs.
 
 Varargs pragma
 --------------
-The ``varargs`` pragma can be applied to procedures only (and procedure 
+The ``varargs`` pragma can be applied to procedures only (and procedure
-types). It tells Nim that the proc can take a variable number of parameters 
+types). It tells Nim that the proc can take a variable number of parameters
 after the last specified parameter. Nim string values will be converted to C
 strings automatically:
 
@@ -94,20 +94,20 @@ should scan unions conservatively.
 
 Packed pragma
 -------------
-The ``packed`` pragma can be applied to any ``object`` type. It ensures 
+The ``packed`` pragma can be applied to any ``object`` type. It ensures
-that the fields of an object are packed back-to-back in memory. It is useful 
+that the fields of an object are packed back-to-back in memory. It is useful
-to store packets or messages from/to network or hardware drivers, and for 
+to store packets or messages from/to network or hardware drivers, and for
-interoperability with C. Combining packed pragma with inheritance is not 
+interoperability with C. Combining packed pragma with inheritance is not
-defined, and it should not be used with GC'ed memory (ref's).  
+defined, and it should not be used with GC'ed memory (ref's).
 
-**Future directions**: Using GC'ed memory in packed pragma will result in 
+**Future directions**: Using GC'ed memory in packed pragma will result in
 compile-time error. Usage with inheritance should be defined and documented.
 
 Unchecked pragma
 ----------------
 The ``unchecked`` pragma can be used to mark a named array as ``unchecked``
-meaning its bounds are not checked. This is often useful when one wishes to
+meaning its bounds are not checked. This is often useful to
-implement their own flexibly sized arrays. Additionally an unchecked array is
+implement customized flexibly sized arrays. Additionally an unchecked array is
 translated into a C array of undetermined size:
 
 .. code-block:: nim
@@ -141,7 +141,7 @@ runtime size of the array.
 Dynlib pragma for import
 ------------------------
 With the ``dynlib`` pragma a procedure or a variable can be imported from
-a dynamic library (``.dll`` files for Windows, ``lib*.so`` files for UNIX). 
+a dynamic library (``.dll`` files for Windows, ``lib*.so`` files for UNIX).
 The non-optional argument has to be the name of the dynamic library:
 
 .. code-block:: Nim
@@ -152,17 +152,17 @@ In general, importing a dynamic library does not require any special linker
 options or linking with import libraries. This also implies that no *devel*
 packages need to be installed.
 
-The ``dynlib`` import mechanism supports a versioning scheme: 
+The ``dynlib`` import mechanism supports a versioning scheme:
 
-.. code-block:: nim 
+.. code-block:: nim
-  proc Tcl_Eval(interp: pTcl_Interp, script: cstring): int {.cdecl, 
+  proc Tcl_Eval(interp: pTcl_Interp, script: cstring): int {.cdecl,
     importc, dynlib: "libtcl(|8.5|8.4|8.3).so.(1|0)".}
 
 At runtime the dynamic library is searched for (in this order)::
-  
+
   libtcl.so.1
   libtcl.so.0
-  libtcl8.5.so.1  
+  libtcl8.5.so.1
   libtcl8.5.so.0
   libtcl8.4.so.1
   libtcl8.4.so.0
@@ -175,22 +175,22 @@ string expressions in general:
 .. code-block:: nim
   import os
 
-  proc getDllName: string = 
+  proc getDllName: string =
     result = "mylib.dll"
     if existsFile(result): return
     result = "mylib2.dll"
     if existsFile(result): return
     quit("could not load dynamic library")
-  
+
   proc myImport(s: cstring) {.cdecl, importc, dynlib: getDllName().}
 
 **Note**: Patterns like ``libtcl(|8.5|8.4).so`` are only supported in constant
 strings, because they are precompiled.
 
-**Note**: Passing variables to the ``dynlib`` pragma will fail at runtime 
+**Note**: Passing variables to the ``dynlib`` pragma will fail at runtime
 because of order of initialization problems.
 
-**Note**: A ``dynlib`` import can be overriden with 
+**Note**: A ``dynlib`` import can be overriden with
 the ``--dynlibOverride:name`` command line option. The Compiler User Guide
 contains further information.
 

doc/tut1.txt

@@ -333,7 +333,7 @@ The while statement is a simple looping construct:
     name = readLine(stdin)
     # no ``var``, because we do not declare a new variable here
 
-The example uses a while loop to keep asking the user for their name, as long
+The example uses a while loop to keep asking the users for their name, as long
 as the user types in nothing (only presses RETURN).
 
 
@@ -774,7 +774,7 @@ proc even(n: int): bool =
 Here ``odd`` depends on ``even`` and vice versa. Thus ``even`` needs to be
 introduced to the compiler before it is completely defined. The syntax for
 such a forward declaration is simple: just omit the ``=`` and the
-procedure's body. The ``assert`` just adds border conditions, and will be 
+procedure's body. The ``assert`` just adds border conditions, and will be
 covered later in `Modules`_ section.
 
 Later versions of the language will weaken the requirements for forward