diff --git a/docs/src/ref/ref_structures_definitions.md b/docs/src/ref/ref_structures_definitions.md
index c6f2d9d3c..0c1bab5c5 100644
--- a/docs/src/ref/ref_structures_definitions.md
+++ b/docs/src/ref/ref_structures_definitions.md
@@ -34,7 +34,6 @@ Composite components are defined using the `@defcomposite` macro which generates
 # CompositeComponentDef <: ComponentDef 
 internal_param_conns::Vector{InternalParameterConnection}   
 backups::Vector{Symbol}
-sorted_comps::Union{Nothing, Vector{Symbol}}
 ```
 The namespace of a composite component can hold `CompositeParameterDef`s and`CompositeVariableDef`s, as well as `AbstractComponentDef`s (which can be other leaf or composite component definitions).
 
diff --git a/src/Mimi.jl b/src/Mimi.jl
index a041b8338..e934e1d3e 100644
--- a/src/Mimi.jl
+++ b/src/Mimi.jl
@@ -73,7 +73,6 @@ include("mcs/mcs.jl") # need mcs types for explorer and utils
 include("explorer/explore.jl")
 include("utils/getdataframe.jl")
 include("utils/graph.jl")
-include("utils/lint_helper.jl")
 include("utils/misc.jl")
 
 # Load built-in components
diff --git a/src/core/defs.jl b/src/core/defs.jl
index 3476c9ee0..1fdc9926e 100644
--- a/src/core/defs.jl
+++ b/src/core/defs.jl
@@ -27,14 +27,6 @@ compname(obj::AbstractComponentDef)   = compname(obj.comp_id)
 
 compnames() = map(compname, compdefs())
 
-"""
-     is_detached(obj::AbstractComponentDef)
-
-Return true if `obj` is not a ModelDef and it has no parent.
-"""
-is_detached(obj::AbstractComponentDef) = (obj.parent === nothing)
-is_detached(obj::ModelDef) = false     # by definition
-
 dirty(md::ModelDef) = md.dirty
 
 function dirty!(obj::AbstractComponentDef)
@@ -792,16 +784,6 @@ function _insert_comp!(obj::AbstractCompositeComponentDef, comp_def::AbstractCom
     nothing
 end
 
-"""
-Return True if time Dimension `outer` contains `inner`.
-"""
-function time_contains(outer::Dimension, inner::Dimension)
-    outer_idx = keys(outer)
-    inner_idx = keys(inner)
-
-    return outer_idx[1] <= inner_idx[1] && outer_idx[end] >= inner_idx[end]
-end
-
 """
     propagate_time!(obj::AbstractComponentDef, t::Dimension)
 
diff --git a/src/core/types/defs.jl b/src/core/types/defs.jl
index edc00eeb5..efb029e2b 100644
--- a/src/core/types/defs.jl
+++ b/src/core/types/defs.jl
@@ -159,9 +159,6 @@ global const NamespaceElement          = Union{LeafNamespaceElement, CompositeNa
     # Names of external params that the ConnectorComps will use as their :input2 parameters.
     backups::Vector{Symbol}
 
-
-    sorted_comps::Union{Nothing, Vector{Symbol}}
-
     function CompositeComponentDef(comp_id::Union{Nothing, ComponentId}=nothing)
         self = new()
         CompositeComponentDef(self, comp_id)
@@ -174,7 +171,6 @@ global const NamespaceElement          = Union{LeafNamespaceElement, CompositeNa
         self.comp_path = ComponentPath(self.name)
         self.internal_param_conns = Vector{InternalParameterConnection}()
         self.backups = Vector{Symbol}()
-        self.sorted_comps = nothing
     end
 end
 
diff --git a/src/utils/graph.jl b/src/utils/graph.jl
index 90b3904d1..440b8c2f0 100644
--- a/src/utils/graph.jl
+++ b/src/utils/graph.jl
@@ -2,38 +2,6 @@
 # Graph Functionality
 #
 
-function _show_conns(io, m, comp_name, which::Symbol)
-    datumtype = which == :incoming ? "parameters" : "variables"
-    println(io, "   $which $datumtype:")
-
-    conns = get_connections(m, comp_name, which)
-
-    if length(conns) == 0
-        println(io, "      none")
-    else
-        for conn in conns
-            if which == :incoming
-                println(io, "      - $(conn.src_comp_path).$(conn.dst_par_name)")
-            else
-                println(io, "      - $(conn.dst_comp_path).$(conn.src_var_name)")
-            end
-        end
-    end
-end
-
-show_conns(m::Model) = show_conns(stdout, m)
-
-function show_conns(io::IO, m::Model)
-    println(io, "Model component connections:")
-
-    for (i, comp_name) in enumerate(compkeys(m.md))
-        comp_def = compdef(m.md, comp_name)
-        println(io, "$i. $(comp_def.comp_id) as :$(nameof(comp_def))")
-        _show_conns(io, m, comp_name, :incoming)
-        _show_conns(io, m, comp_name, :outgoing)
-    end
-end
-
 function _filter_connections(conns::Vector{InternalParameterConnection}, comp_path::ComponentPath, which::Symbol)
     if which == :all
         f = obj -> (obj.src_comp_path == comp_path || obj.dst_comp_path == comp_path)
diff --git a/src/utils/lint_helper.jl b/src/utils/lint_helper.jl
deleted file mode 100644
index 67a14f62d..000000000
--- a/src/utils/lint_helper.jl
+++ /dev/null
@@ -1,9 +0,0 @@
-function lint_helper(ex::Expr, ctx)
-    if ex.head == :macrocall
-        if ex.args[1] == Symbol("@defcomp")
-            push!(ctx.callstack[end].types, ex.args[2])
-            return true
-        end
-    end
-    return false
-end
diff --git a/test/test_show.jl b/test/test_show.jl
index 83e526bc4..33fd09769 100644
--- a/test/test_show.jl
+++ b/test/test_show.jl
@@ -90,7 +90,6 @@ Model
             ...
             6: 0.0
           1: time
-    sorted_comps: nothing
     number_type: Float64
   mi: nothing"""   # ignore (most) whitespace
 
diff --git a/test/test_tools.jl b/test/test_tools.jl
index c61ce04da..b6df559cd 100644
--- a/test/test_tools.jl
+++ b/test/test_tools.jl
@@ -2,9 +2,10 @@ module TestTools
 
 using Test
 using Mimi
+using Logging
 
 import Mimi:
-    getproperty, pretty_string
+    getproperty, pretty_string, set_log_level, log_debug, log_info
 
 #utils: pretty_string
 @test pretty_string("camelCaseBasic") == pretty_string(:camelCaseBasic) == "Camel Case Basic"
@@ -18,4 +19,10 @@ final = 10
 ts = 10
 @test Mimi.interpolate(collect(0:stepsize:final), ts) == collect(0:stepsize/ts:final)
 
+# utils: logging - toggle back and forth 
+log_debug()
+@test current_logger().min_level == Logging.Debug
+log_info()
+@test current_logger().min_level == Logging.Info
+
 end #module