Update VMCX doc: Include `temp_path`; ISO & VMCX docs: Better explain opts

website/source/docs/builders/hyperv-iso.html.md.erb

@@ -201,12 +201,13 @@ builder.
     the default virtual network card. The MAC address must be a string with
     no delimiters, for example "0000deadbeef".
 
--   `output_directory` (string) - This is the path to the directory where the
-    resulting virtual machine will be created. This may be relative or
-    absolute. If relative, the path is relative to the working directory when
-    `packer` is executed. This directory must not exist or be empty prior to
-    running the builder. By default this is "output-BUILDNAME" where
-    "BUILDNAME" is the name of the build.
+-   `output_directory` (string) - This setting specifies the directory that
+    artifacts from the build, such as the virtual machine files and disks,
+    will be output to. The path to the directory may be relative or
+    absolute. If relative, the path is relative to the working directory
+    `packer` is executed from. This directory must not exist or, if
+    created, must be empty prior to running the builder. By default this is
+    "output-BUILDNAME" where "BUILDNAME" is the name of the build.
 
 -   `ram_size` (number) - The amount, in megabytes, of RAM to assign to the
     VM. By default, this is 1 GB.
@@ -238,11 +239,11 @@ builder.
 -   `skip_compaction` (boolean) - If `true` skip compacting the hard disk for
     the virtual machine when exporting. This defaults to `false`.
 
--   `skip_export` (boolean) - If `true` Packer will skip the export of the
-    VM. If you are interested only in the VHD/VHDX files, you can enable
-    this option. This will create inline disks which improves the build
-    performance.  There will not be any copying of source VHDs to the temp
-    directory. This defaults to `false`.
+-   `skip_export` (boolean) - If `true` Packer will skip the export of the VM.
+    If you are interested only in the VHD/VHDX files, you can enable this
+    option. The resulting VHD/VHDX file will be output to
+    `<output_directory>/Virtual Hard Disks`. By default this option is `false`
+    and Packer will export the VM to `output_directory`.
 
 -   `switch_name` (string) - The name of the switch to connect the virtual
     machine to. By default, leaving this value unset will cause Packer to
@@ -254,8 +255,15 @@ builder.
     set on the switch's network card. If this value is set it should match
     the VLAN specified in by `vlan_id`.
 
--   `temp_path` (string) - This is the temporary path in which Packer will
-    create the virtual machine. By default the value is the system `%temp%`.
+-   `temp_path` (string) - The location under which Packer will create a
+    directory to house all the VM files and folders during the build.
+    By default `%TEMP%` is used which, for most systems, will evaluate to
+    `%USERPROFILE%/AppData/Local/Temp`.
+
+    The build directory housed under `temp_path` will have a name similar
+    to `packerhv1234567`. The seven digit number at the end of the name is
+    automatically generated by Packer to ensure the directory name is
+    unique.
 
 -   `use_fixed_vhd_format` (boolean) - If true, creates the boot disk on the
     virtual machine as a fixed VHD format disk. The default is `false`, which

website/source/docs/builders/hyperv-vmcx.html.md.erb

@@ -202,12 +202,13 @@ builder.
     the default virtual network card. The MAC address must be a string with
     no delimiters, for example "0000deadbeef".
 
--   `output_directory` (string) - This is the path to the directory where the
-    resulting virtual machine will be created. This may be relative or
-    absolute. If relative, the path is relative to the working directory when
-    `packer` is executed. This directory must not exist or be empty prior to
-    running the builder. By default this is "output-BUILDNAME" where
-    "BUILDNAME" is the name of the build.
+-   `output_directory` (string) - This setting specifies the directory that
+    artifacts from the build, such as the virtual machine files and disks,
+    will be output to. The path to the directory may be relative or
+    absolute. If relative, the path is relative to the working directory
+    `packer` is executed from. This directory must not exist or, if
+    created, must be empty prior to running the builder. By default this is
+    "output-BUILDNAME" where "BUILDNAME" is the name of the build.
 
 -   `ram_size` (number) - The amount, in megabytes, of RAM to assign to the
     VM. By default, this is 1 GB.
@@ -255,6 +256,16 @@ builder.
     set on the switch's network card. If this value is set it should match
     the VLAN specified in by `vlan_id`.
 
+-   `temp_path` (string) - The location under which Packer will create a
+    directory to house all the VM files and folders during the build.
+    By default `%TEMP%` is used which, for most systems, will evaluate to
+    `%USERPROFILE%/AppData/Local/Temp`.
+
+    The build directory housed under `temp_path` will have a name similar
+    to `packerhv1234567`. The seven digit number at the end of the name is
+    automatically generated by Packer to ensure the directory name is
+    unique.
+
 -   `vlan_id` (string) - This is the VLAN of the virtual machine's network
     card for the new virtual machine. By default none is set. If none is set
     then VLANs are not set on the virtual machine's network card.