diff --git a/.gitignore b/.gitignore
index e1d23a1d52e7ad6bb8bd64f71063c07bec54a642..22b07a77072ecea18429996843c3a8c09222c21c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,11 +8,12 @@ tests/json*
 lib/
 bin/
 obj/
+
 # Standard template
 *.org~
 *.so
 *.pyc
-build/*
+/build/*
 binary_c_python_api.o
 output/*
 *.nfs*
diff --git a/docs/source/binary_c_parameters.rst b/docs/source/binary_c_parameters.rst
index 144e916abfe96777be30e14edcfcb563e411b1a2..56de8181e1e5404f7c0e5b2c6ec273f278045544 100644
--- a/docs/source/binary_c_parameters.rst
+++ b/docs/source/binary_c_parameters.rst
@@ -4,7 +4,7 @@ The following chapter contains all the parameters that the current version of bi
 
 
 This information was obtained by the following binary_c build: 
-	**binary_c git branch**: branch_david	**binary_c git revision**: 5479:20210111:463f148ec	**Built on**: Jan 11 2021 17:31:47
+	**binary_c git branch**: branch_david	**binary_c git revision**: 5479:20210111:463f148ec	**Built on**: Jan 28 2021 20:10:20
 
 
 Section: stars
diff --git a/docs/source/grid_options_descriptions.rst b/docs/source/grid_options_descriptions.rst
index 46455660b8d9f943af33dfb1b1cdb2f59629eb2e..0f948ea04cddcd472441000f45fd2de48011ee71 100644
--- a/docs/source/grid_options_descriptions.rst
+++ b/docs/source/grid_options_descriptions.rst
@@ -37,6 +37,8 @@ The following options are meant to be changed by the user.
 
 | **log_file**: Log file for the population object. Unused
 
+| **log_runtime_systems**: Whether to log the runtime of the systems . Each systems run by the thread is logged to a file and is stored in the tmp_dir. (1 file per thread). Don't use this if you are planning to run alot of systems. This is mostly for debugging and finding systems that take long to run. Integer, default = 0. if value is 1 then the systems are logged
+
 | **modulo**: No description available yet
 
 | **parse_function**: Function that the user can provide to handle the output the binary_c. This function has to take the arguments (self, output). Its best not to return anything in this function, and just store stuff in the grid_options['results'] dictionary, or just output results to a file