diff --git a/README.md b/README.md
index 20400d0..e6cec8f 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # AQuery++ DB
+## Introduction
 
-AQuery++ Database is an In-Memory Column-Store Database that incorporates compiled query execution.
+AQuery++ Database is a cross-platform, In-Memory Column-Store Database that incorporates compiled query execution.
 Compiler frontend built on top of [mo-sql-parsing](https://github.com/klahnakoski/mo-sql-parsing).
 
 ## Roadmap
@@ -24,8 +25,20 @@ Compiler frontend built on top of [mo-sql-parsing](https://github.com/klahnakosk
 - [ ] C++ Meta-Programming: Elimilate template recursions as much as possible.
 - [ ] IPC: Better ways to communicate between Interpreter (Python) and Executer (C++).
   - [ ] Sockets? stdin/stdout capture?
-## Introduction
 
 ## Requirements
+Recent version of Linux, Windows or MacOS, with recent C++ compiler that has C++17 (1z) support (e.g. gcc 6.0, MSVC 2017, clang 6.0), and python 3.6 or above.
 
 ## Usage
+`python3 prompt.py` will launch the interactive command prompt. The server binary will be autometically rebuilt and started.
+#### Commands:
+- `<sql statement>`: parse sql statement
+- `f <filename>`: parse all sql statements in file
+- `print`: printout parsed sql statements
+- `exec`: execute last parsed statement(s)
+- `r`: run the last generated code snippet
+- `save <OPTIONAL: filename>`: save current code snippet. will use random filename if not specified.
+- `exit`: quit the prompt
+#### Example:
+   `f moving_avg.a` <br>
+   `exec`
\ No newline at end of file
diff --git a/msc-plugin/msc-plugin.vcxproj b/msc-plugin/msc-plugin.vcxproj
index 8e000f0..682cfb8 100644
--- a/msc-plugin/msc-plugin.vcxproj
+++ b/msc-plugin/msc-plugin.vcxproj
@@ -93,7 +93,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <LanguageStandard>stdcpp17</LanguageStandard>
+      <LanguageStandard>stdcpplatest</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -109,7 +109,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <LanguageStandard>stdcpp17</LanguageStandard>
+      <LanguageStandard>stdcpplatest</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -125,7 +125,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <LanguageStandard>stdcpp17</LanguageStandard>
+      <LanguageStandard>stdcpplatest</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -141,7 +141,7 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <LanguageStandard>stdcpp17</LanguageStandard>
+      <LanguageStandard>stdcpplatest</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/prompt.py b/prompt.py
index 94fbd62..e956c3a 100644
--- a/prompt.py
+++ b/prompt.py
@@ -92,6 +92,8 @@ cxt = None
 while test_parser:
     try:
         if server.poll() is not None:
+            mm.seek(0,os.SEEK_SET)
+            mm.write(b'\x01\x00')
             server = subprocess.Popen(["./server.bin", shm])
         q = input()
         if q == 'exec':
@@ -128,6 +130,15 @@ while test_parser:
                 mm.seek(0,os.SEEK_SET)  
                 mm.write(b'\x01\x01')
             continue
+        elif q.startswith('save'):
+            filename = re.split(' |\t', q)
+            if (len(filename) > 1):
+                filename = filename[1]
+            else:
+                filename = f'out_{base62uuid(4)}.cpp'
+            with open(filename, 'wb') as outfile:
+                outfile.write((cxt.finalize()).encode('utf-8'))
+            continue
         trimed = ws.sub(' ', q.lower()).split(' ') 
         if trimed[0].startswith('f'):
             fn = 'stock.a' if len(trimed) <= 1 or len(trimed[1]) == 0 \
diff --git a/server/server.vcxproj b/server/server.vcxproj
index 92de8fb..0c38f23 100644
--- a/server/server.vcxproj
+++ b/server/server.vcxproj
@@ -23,32 +23,32 @@
     <Keyword>Win32Proj</Keyword>
     <ProjectGuid>{031352c2-afbb-45aa-9518-dbc1f9ef2af3}</ProjectGuid>
     <RootNamespace>server</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0.19041.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -88,9 +88,9 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <LanguageStandard>stdcpp20</LanguageStandard>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <EnableParallelCodeGeneration>true</EnableParallelCodeGeneration>
+      <LanguageStandard>stdcpplatest</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -105,9 +105,9 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <LanguageStandard>stdcpp20</LanguageStandard>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <EnableParallelCodeGeneration>true</EnableParallelCodeGeneration>
+      <LanguageStandard>stdcpplatest</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -122,9 +122,9 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <LanguageStandard>stdcpp20</LanguageStandard>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <EnableParallelCodeGeneration>true</EnableParallelCodeGeneration>
+      <LanguageStandard>stdcpplatest</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -139,9 +139,9 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
-      <LanguageStandard>stdcpp20</LanguageStandard>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <EnableParallelCodeGeneration>true</EnableParallelCodeGeneration>
+      <LanguageStandard>stdcpplatest</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/stock.a b/stock.a
index 6d05fc8..395727e 100644
--- a/stock.a
+++ b/stock.a
@@ -29,4 +29,4 @@ SELECT price, timestamp FROM stocks where price - timestamp > 1 and not (price*t
 /*<k> "q4"</k>*/
 SELECT max(price-mins(price))
 FROM stocks
-     ASSUMING ASC price
+     ASSUMING DESC timestamp